diff --git a/ohos_nweb/src/capi/nweb_download_item.h b/ohos_nweb/src/capi/nweb_download_item.h
index f086ff7c6581196f9b4d98c4d279f363a213ad1d..c6fe66f4ec2b175cc8f85be3f35e0c94cf20e031 100644
--- a/ohos_nweb/src/capi/nweb_download_item.h
+++ b/ohos_nweb/src/capi/nweb_download_item.h
@@ -120,7 +120,7 @@ struct NWebDownloadItem {
     std::string original_url_ = download_item->GetOriginalUrl().ToString();
     original_url = strdup(original_url_.c_str());
     std::string content_disposition_ =
-        download_item->GetContentDisposition().ToString();
+        download_item->GetContentDisposition()->GetStdString();
     content_disposition = strdup(content_disposition_.c_str());
     std::string mime_type_ = download_item->GetMimeType().ToString();
     mime_type = strdup(mime_type_.c_str());
diff --git a/ohos_nweb/src/cef_delegate/nweb_download_handler_delegate.cc b/ohos_nweb/src/cef_delegate/nweb_download_handler_delegate.cc
index 10f3fdb1c146bfae05babdeea71514b97ba498a2..62593feddf50fee5c892e682a56ebe1258483add 100644
--- a/ohos_nweb/src/cef_delegate/nweb_download_handler_delegate.cc
+++ b/ohos_nweb/src/cef_delegate/nweb_download_handler_delegate.cc
@@ -132,11 +132,15 @@ std::string NWebDownloadHandlerDelegate::GenerateSuggestedFilename(
   // type under certain condition.
   std::string default_filename(
       l10n_util::GetStringUTF8(IDS_DEFAULT_DOWNLOAD_FILENAME));
+  std::shared_ptr<NWeb> nweb = NWebImpl::GetNWeb(download_item->GetNWebId());
   std::string default_charset =
-      preference_delegate_ ? preference_delegate_->DefaultTextEncodingFormat() : "utf-8";
+      preference_delegate_ ? preference_delegate_->DefaultTextEncodingFormat() :
+      (nweb ? nweb->GetPreference()->DefaultTextEncodingFormat() : "utf-8");
+  LOG(INFO) << "GenerateSuggestedFilename mime_type: " << sniffed_mime_type
+            << "default_charset: " << default_charset;
   GURL gurl(download_item->GetURL().ToString());
   base::FilePath generated_filename = net::GenerateFileName(
-      gurl, download_item->GetContentDisposition().ToString(), default_charset,
+      gurl, download_item->GetContentDisposition()->GetStdString(), default_charset,
       suggested_filename, sniffed_mime_type, default_filename);
 
   // If no mime type or explicitly specified a name, don't replace file
@@ -146,7 +150,7 @@ std::string NWebDownloadHandlerDelegate::GenerateSuggestedFilename(
 
   // Trust content disposition header filename attribute.
   net::HttpContentDisposition content_disposition_header(
-      download_item->GetContentDisposition(), default_charset);
+      download_item->GetContentDisposition()->GetStdString(), default_charset);
   if (!content_disposition_header.filename().empty())
     return generated_filename.AsUTF8Unsafe();
 
diff --git a/ohos_nweb/src/cef_delegate/nweb_handler_delegate.cc b/ohos_nweb/src/cef_delegate/nweb_handler_delegate.cc
index ae1c40555e6f510982173ad9261e97ca92020435..4d51a868ca67a5e347f44337bbd90ca5ae877d22 100644
--- a/ohos_nweb/src/cef_delegate/nweb_handler_delegate.cc
+++ b/ohos_nweb/src/cef_delegate/nweb_handler_delegate.cc
@@ -1713,7 +1713,7 @@ void NWebHandlerDelegate::OnBeforeDownload(
     download_listener_->OnDownloadStart(
         download_item->GetURL().ToString(),
         browser->GetHost()->DefaultUserAgent(),
-        download_item->GetContentDisposition().ToString(),
+        download_item->GetContentDisposition()->GetStdString(),
         download_item->GetMimeType().ToString(),
         download_item->GetTotalBytes());
   }