diff --git a/BUILD.gn b/BUILD.gn
index 71f3ee228b6dc2bbbb2dea9533512794a2d15b60..6d80a18e11ddf82ab728a46e17ddebb56079dbb8 100755
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -31,6 +31,7 @@ group("fuzztest") {
     "services/distributeddataservice/adapter/test:fuzztest",
     "services/distributeddataservice/app/test/fuzztest:fuzztest",
     "services/distributeddataservice/service/test/fuzztest:fuzztest",
+    "services/distributeddataservice/framework/test/fuzztest:fuzztest",
   ]
 }
 ###############################################################################
diff --git a/services/distributeddataservice/framework/test/fuzztest/BUILD.gn b/services/distributeddataservice/framework/test/fuzztest/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..b35cb67af178f4630b3f50d1f4cbd1170d81ff2c
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/BUILD.gn
@@ -0,0 +1,25 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build/ohos.gni")
+import("//foundation/distributeddatamgr/datamgr_service/datamgr_service.gni")
+
+#########################################################################################
+group("fuzztest") {
+  testonly = true
+
+  deps = [
+    "storedebuginfo_fuzzer:fuzztest",
+    "screenmanager_fuzzer:fuzztest",
+  ]
+}
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/BUILD.gn b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..f063faa15c3e8a5a0e1e28ad2119271ce4a6930b
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/BUILD.gn
@@ -0,0 +1,55 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##############################hydra-fuzz########################################
+import("//build/config/features.gni")
+import("//build/test.gni")
+import("//foundation/distributeddatamgr/datamgr_service/datamgr_service.gni")
+
+##############################fuzztest##########################################
+ohos_fuzztest("ScreenManagerFuzzTest") {
+  module_out_path = "datamgr_service/datamgr_service"
+
+  include_dirs = [
+    "${data_service_path}/framework/include",
+  ]
+
+  fuzz_config_file =
+      "${data_service_path}/framework/test/fuzztest/screenmanager_fuzzer"
+
+  sources = [ "screenmanager_fuzzer.cpp" ]
+
+  cflags = [
+    "-g",
+    "-O0",
+    "-Wno-unused-variable",
+    "-fno-omit-frame-pointer",
+  ]
+
+  deps = [
+    "${data_service_path}/framework:distributeddatasvcfwk",
+  ]
+
+  external_deps = [
+    "c_utils:utils",
+    "hilog:libhilog",
+    "kv_store:datamgr_common",
+  ]
+}
+
+###############################################################################
+group("fuzztest") {
+  testonly = true
+
+  deps = [ ":ScreenManagerFuzzTest" ]
+}
+###############################################################################
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/corpus/init b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/corpus/init
new file mode 100644
index 0000000000000000000000000000000000000000..7ade8a0faafeaedba7241e7d4a97b8e1f9691932
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/corpus/init
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+FUZZ
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/project.xml b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/project.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a37a23b1533f07ab59744732b0f46b2b5fd958d8
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/project.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2025 Huawei Device Co., Ltd.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<fuzz_config>
+    <fuzztest>
+        <!-- maximum length of a test input -->
+        <max_len>1000</max_len>
+        <!-- maximum total time in seconds to run the fuzzer -->
+        <max_total_time>300</max_total_time>
+        <!-- memory usage limit in Mb -->
+        <rss_limit_mb>4096</rss_limit_mb>
+    </fuzztest>
+</fuzz_config>
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/screenmanager_fuzzer.cpp b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/screenmanager_fuzzer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d944f95c32460f65b1dbaa5db93703e895cf2f26
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/screenmanager_fuzzer.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fuzzer/FuzzedDataProvider.h>
+#include "screenmanager_fuzzer.h"
+#include "screen/screen_manager.h"
+
+using namespace OHOS::DistributedData;
+
+namespace OHOS {
+void TestScreenManager(FuzzedDataProvider &provider)
+{
+    ScreenManager::GetInstance()->Subscribe(nullptr);
+    ScreenManager::GetInstance()->Unsubscribe(nullptr);
+    ScreenManager::GetInstance()->BindExecutor(nullptr);
+    ScreenManager::GetInstance()->SubscribeScreenEvent();
+    ScreenManager::GetInstance()->UnsubscribeScreenEvent();
+}
+
+} // namespace OHOS
+
+/* Fuzzer entry point */
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    FuzzedDataProvider provider(data, size);
+    OHOS::TestScreenManager(provider);
+    return 0;
+}
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/screenmanager_fuzzer.h b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/screenmanager_fuzzer.h
new file mode 100644
index 0000000000000000000000000000000000000000..ab2fe6fe3efc801f5bc6b74e8a7861e05babcbfb
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/screenmanager_fuzzer/screenmanager_fuzzer.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SCREENMANAGER_FUZZER_H
+#define SCREENMANAGER_FUZZER_H
+
+#define FUZZ_PROJECT_NAME "screenmanager_fuzzer"
+
+#endif // SCREENMANAGER_FUZZER_H
diff --git a/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/BUILD.gn b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..fd6c2367f9ec5b84138e895b604abd94032e78da
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/BUILD.gn
@@ -0,0 +1,55 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##############################hydra-fuzz########################################
+import("//build/config/features.gni")
+import("//build/test.gni")
+import("//foundation/distributeddatamgr/datamgr_service/datamgr_service.gni")
+
+##############################fuzztest##########################################
+ohos_fuzztest("StoreDebugInfoFuzzTest") {
+  module_out_path = "datamgr_service/datamgr_service"
+
+  include_dirs = [
+    "${data_service_path}/framework/include",
+  ]
+
+  fuzz_config_file =
+      "${data_service_path}/framework/test/fuzztest/storedebuginfo_fuzzer"
+
+  sources = [ "storedebuginfo_fuzzer.cpp" ]
+
+  cflags = [
+    "-g",
+    "-O0",
+    "-Wno-unused-variable",
+    "-fno-omit-frame-pointer",
+  ]
+
+  deps = [
+    "${data_service_path}/framework:distributeddatasvcfwk",
+  ]
+
+  external_deps = [
+    "c_utils:utils",
+    "hilog:libhilog",
+    "kv_store:datamgr_common",
+  ]
+}
+
+###############################################################################
+group("fuzztest") {
+  testonly = true
+
+  deps = [ ":StoreDebugInfoFuzzTest" ]
+}
+###############################################################################
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/corpus/init b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/corpus/init
new file mode 100644
index 0000000000000000000000000000000000000000..7ade8a0faafeaedba7241e7d4a97b8e1f9691932
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/corpus/init
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+FUZZ
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/project.xml b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/project.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a37a23b1533f07ab59744732b0f46b2b5fd958d8
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/project.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2025 Huawei Device Co., Ltd.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<fuzz_config>
+    <fuzztest>
+        <!-- maximum length of a test input -->
+        <max_len>1000</max_len>
+        <!-- maximum total time in seconds to run the fuzzer -->
+        <max_total_time>300</max_total_time>
+        <!-- memory usage limit in Mb -->
+        <rss_limit_mb>4096</rss_limit_mb>
+    </fuzztest>
+</fuzz_config>
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/storedebuginfo_fuzzer.cpp b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/storedebuginfo_fuzzer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f497a3d16753eb0f3053784ba2cb012ca5b6d6b6
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/storedebuginfo_fuzzer.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fuzzer/FuzzedDataProvider.h>
+#include "storedebuginfo_fuzzer.h"
+#include "metadata/store_debug_info.h"
+
+using namespace OHOS::DistributedData;
+
+namespace OHOS {
+
+void StoreDebugInfoFuzz(FuzzedDataProvider &provider)
+{
+    StoreDebugInfo::FileInfo fileInfo;
+    StoreDebugInfo debugInfo;
+    std::string fileName = "filename";
+    debugInfo.fileInfos.insert(std::make_pair(fileName, fileInfo));
+    Serializable::json node;
+    std::string key = provider.ConsumeRandomLengthString();
+    std::string valueStr = provider.ConsumeRandomLengthString();
+    int valueInt = provider.ConsumeIntegral<int>();
+    float valueFloat = provider.ConsumeFloatingPoint<float>();
+    bool valueBool = provider.ConsumeBool();
+    int valueRange = provider.ConsumeIntegralInRange<int>(0, 100);
+    node[key] = valueStr;
+    node["integer"] = valueInt;
+    node["float"] = valueFloat;
+    node["boolean"] = valueBool;
+    node["range"] = valueRange;
+    fileInfo.Marshal(node);
+    fileInfo.Unmarshal(node);
+    debugInfo.Marshal(node);
+    debugInfo.Unmarshal(node);
+}
+} // namespace OHOS
+
+/* Fuzzer entry point */
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    FuzzedDataProvider provider(data, size);
+    OHOS::StoreDebugInfoFuzz(provider);
+    return 0;
+}
\ No newline at end of file
diff --git a/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/storedebuginfo_fuzzer.h b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/storedebuginfo_fuzzer.h
new file mode 100644
index 0000000000000000000000000000000000000000..152fe67a68dbd7930386bfa5a930bee2eb4bf3f7
--- /dev/null
+++ b/services/distributeddataservice/framework/test/fuzztest/storedebuginfo_fuzzer/storedebuginfo_fuzzer.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef STOREDEBUGINFO_FUZZER_H
+#define STOREDEBUGINFO_FUZZER_H
+
+#define FUZZ_PROJECT_NAME "storedebuginfo_fuzzer"
+
+#endif // STOREDEBUGINFO_FUZZER_H
\ No newline at end of file
diff --git a/services/distributeddataservice/service/test/fuzztest/BUILD.gn b/services/distributeddataservice/service/test/fuzztest/BUILD.gn
index efc92352430c137946660de49280abbe6e5ed71f..f444f810bb828e76b44293dd8e38e1d20e794198 100644
--- a/services/distributeddataservice/service/test/fuzztest/BUILD.gn
+++ b/services/distributeddataservice/service/test/fuzztest/BUILD.gn
@@ -21,7 +21,10 @@ group("fuzztest") {
   deps = [ "dumphelper_fuzzer:fuzztest" ]
 
   if (datamgr_service_cloud) {
-    deps += [ "cloudservicestub_fuzzer:fuzztest" ]
+    deps += [ 
+      "cloudservicestub_fuzzer:fuzztest",
+      "syncstrategies_fuzzer:fuzztest",
+    ]
   }
 
   if (datamgr_service_object) {
diff --git a/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/BUILD.gn b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..fcc9489e426bae47f45c515e882b67697d78be32
--- /dev/null
+++ b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/BUILD.gn
@@ -0,0 +1,66 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+##############################hydra-fuzz########################################
+import("//build/config/features.gni")
+import("//build/test.gni")
+import("//foundation/distributeddatamgr/datamgr_service/datamgr_service.gni")
+
+##############################fuzztest##########################################
+ohos_fuzztest("SyncStrategiesFuzzTest") {
+  module_out_path = "datamgr_service/datamgr_service"
+
+  include_dirs = [
+    "${data_service_path}/framework/include",
+    "${data_service_path}/service/cloud",
+    "${data_service_path}/service/common",
+  ]
+
+  fuzz_config_file =
+      "${data_service_path}/service/test/fuzztest/syncstrategies_fuzzer"
+
+  sources = [ "syncstrategies_fuzzer.cpp" ]
+
+  cflags = [
+    "-g",
+    "-O0",
+    "-Wno-unused-variable",
+    "-fno-omit-frame-pointer",
+    "-fno-access-control",
+  ]
+
+  deps = [
+    "${data_service_path}/adapter/dfx:distributeddata_dfx",
+    "${data_service_path}/framework:distributeddatasvcfwk",
+    "${data_service_path}/service/cloud:distributeddata_cloud",
+    "${data_service_path}/service/common:distributeddata_common",
+    "${data_service_path}/service/bootstrap:distributeddata_bootstrap",
+    "${data_service_path}/service/permission:distributeddata_permit",
+  ]
+
+  external_deps = [
+    "access_token:libaccesstoken_sdk",
+    "access_token:libtoken_setproc",
+    "access_token:libtokenid_sdk",
+    "c_utils:utils",
+    "hilog:libhilog",
+    "kv_store:datamgr_common",
+  ]
+}
+
+###############################################################################
+group("fuzztest") {
+  testonly = true
+
+  deps = [ ":SyncStrategiesFuzzTest" ]
+}
+###############################################################################
\ No newline at end of file
diff --git a/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/corpus/init b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/corpus/init
new file mode 100644
index 0000000000000000000000000000000000000000..7ade8a0faafeaedba7241e7d4a97b8e1f9691932
--- /dev/null
+++ b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/corpus/init
@@ -0,0 +1,16 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+FUZZ
\ No newline at end of file
diff --git a/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/project.xml b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/project.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a37a23b1533f07ab59744732b0f46b2b5fd958d8
--- /dev/null
+++ b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/project.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2025 Huawei Device Co., Ltd.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<fuzz_config>
+    <fuzztest>
+        <!-- maximum length of a test input -->
+        <max_len>1000</max_len>
+        <!-- maximum total time in seconds to run the fuzzer -->
+        <max_total_time>300</max_total_time>
+        <!-- memory usage limit in Mb -->
+        <rss_limit_mb>4096</rss_limit_mb>
+    </fuzztest>
+</fuzz_config>
\ No newline at end of file
diff --git a/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/syncstrategies_fuzzer.cpp b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/syncstrategies_fuzzer.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..a29c25be20acbd67434ccc072634f59808b6a423
--- /dev/null
+++ b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/syncstrategies_fuzzer.cpp
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fuzzer/FuzzedDataProvider.h>
+#include "syncstrategies_fuzzer.h"
+#include "sync_strategies/network_sync_strategy.h"
+
+using namespace OHOS::DistributedData;
+using namespace OHOS::CloudData;
+
+namespace OHOS {
+void SyncStrategiesFuzz001(FuzzedDataProvider &provider)
+{
+    int32_t user = provider.ConsumeIntegral<int32_t>();
+    std::string bundleName = provider.ConsumeRandomLengthString();
+    NetworkSyncStrategy strategy;
+    StoreInfo storeInfo;
+    storeInfo.user = user;
+    storeInfo.bundleName = bundleName;
+    strategy.CheckSyncAction(storeInfo);
+}
+
+void SyncStrategiesFuzz002(FuzzedDataProvider &provider)
+{
+    uint32_t strategy = provider.ConsumeIntegral<uint32_t>();
+    NetworkSyncStrategy strategyInstance;
+    strategyInstance.Check(strategy);
+}
+
+void SyncStrategiesFuzz003(FuzzedDataProvider &provider)
+{
+    int32_t user = provider.ConsumeIntegral<int32_t>();
+    std::string bundleName = provider.ConsumeRandomLengthString();
+    NetworkSyncStrategy strategyInstance;
+    strategyInstance.GetStrategy(user, bundleName);
+    strategyInstance.GetKey(user);
+
+    NetworkSyncStrategy::StrategyInfo info;
+    info.user = 1;
+    info.bundleName = "StrategyInfo";
+    Serializable::json node;
+    std::string key = provider.ConsumeRandomLengthString();
+    std::string valueStr = provider.ConsumeRandomLengthString();
+    int valueInt = provider.ConsumeIntegral<int>();
+    float valueFloat = provider.ConsumeFloatingPoint<float>();
+    bool valueBool = provider.ConsumeBool();
+    int valueRange = provider.ConsumeIntegralInRange<int>(0, 100);
+    node[key] = valueStr;
+    node["integer"] = valueInt;
+    node["float"] = valueFloat;
+    node["boolean"] = valueBool;
+    node["range"] = valueRange;
+    info.Marshal(node);
+    info.Unmarshal(node);
+}
+} // namespace OHOS
+
+/* Fuzzer entry point */
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    FuzzedDataProvider provider(data, size);
+    OHOS::SyncStrategiesFuzz001(provider);
+    OHOS::SyncStrategiesFuzz002(provider);
+    OHOS::SyncStrategiesFuzz003(provider);
+    return 0;
+}
\ No newline at end of file
diff --git a/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/syncstrategies_fuzzer.h b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/syncstrategies_fuzzer.h
new file mode 100644
index 0000000000000000000000000000000000000000..ab2199aa1ca48a9cbd7cdd3bee0ac0319b239049
--- /dev/null
+++ b/services/distributeddataservice/service/test/fuzztest/syncstrategies_fuzzer/syncstrategies_fuzzer.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SYNCSTRATEGIES_FUZZER_H
+#define SYNCSTRATEGIES_FUZZER_H
+ 
+#define FUZZ_PROJECT_NAME "syncstrategies_fuzzer"
+ 
+#endif // SYNCSTRATEGIES_FUZZER_H
\ No newline at end of file