diff --git a/src/common/backend/parser/parse_utilcmd.cpp b/src/common/backend/parser/parse_utilcmd.cpp
index 14ee9a447f32b561eaad67268b336c15ac1451be..b9cae1919f76b3336f13cbb361cd162dba585467 100644
--- a/src/common/backend/parser/parse_utilcmd.cpp
+++ b/src/common/backend/parser/parse_utilcmd.cpp
@@ -4199,7 +4199,8 @@ void checkPartitionSynax(CreateStmt* stmt)
                     errmsg("Range partitioned table with INTERVAL clause has more than one column"),
                     errhint("Only support one partition key for interval partition")));
         }
-        if (!IsA(stmt->partTableState->intervalPartDef->partInterval, A_Const)) {
+        if (!IsA(stmt->partTableState->intervalPartDef->partInterval, A_Const) ||
+            ((A_Const*)stmt->partTableState->intervalPartDef->partInterval)->val.type != T_String) {
             ereport(ERROR,
                 (errcode(ERRCODE_INVALID_DATETIME_FORMAT),
                     // errmsg("invalid input syntax for type %s: \"%s\"", datatype, str)));
diff --git a/src/test/regress/expected/hw_partition_interval_check_syntax.out b/src/test/regress/expected/hw_partition_interval_check_syntax.out
new file mode 100644
index 0000000000000000000000000000000000000000..ee0080b4ab2e1352a79c3f47736873136a40e348
--- /dev/null
+++ b/src/test/regress/expected/hw_partition_interval_check_syntax.out
@@ -0,0 +1,24 @@
+create table partiton_table_001(
+COL_1 bigint,
+COL_2 TIMESTAMP WITHOUT TIME ZONE,
+COL_3 bool,
+COL_4 decimal
+)
+PARTITION BY RANGE (COL_4)
+INTERVAL (10000)
+(
+PARTITION partiton_table_001_p1 VALUES LESS THAN (1000)
+);
+ERROR:  invalid input syntax for type interval
+create table partiton_table_001(
+COL_1 bigint,
+COL_2 TIMESTAMP WITHOUT TIME ZONE,
+COL_3 bool,
+COL_4 decimal
+)
+PARTITION BY RANGE (COL_2)
+INTERVAL ('2018-1-1')
+(
+PARTITION partiton_table_001_p1 VALUES LESS THAN ('2020-03-01')
+);
+ERROR:  invalid input syntax for type interval: "2018-1-1"
diff --git a/src/test/regress/parallel_schedule18 b/src/test/regress/parallel_schedule18
index acc596dfb31070fedd1a2914e00a99bd19911d75..d26cd6bde270b5d36eb363ad4d4955950f404bdd 100644
--- a/src/test/regress/parallel_schedule18
+++ b/src/test/regress/parallel_schedule18
@@ -17,6 +17,7 @@ test: hw_partition_interval_parallel_prepare
 test: hw_partition_interval_parallel_insert hw_partition_interval_parallel_insert_01 hw_partition_interval_parallel_insert_02
 test: hw_partition_interval_parallel_end
 test: hw_partition_interval_select
+test: hw_partition_interval_check_syntax
 #test: hw_partition_lock
 #test: hw_partition_llt
 # FIXME: move me back to the parallel test when the refcnt issue is fixed
diff --git a/src/test/regress/sql/hw_partition_interval_check_syntax.sql b/src/test/regress/sql/hw_partition_interval_check_syntax.sql
new file mode 100644
index 0000000000000000000000000000000000000000..5b054545f2449bf84c50e687eac0da9445837546
--- /dev/null
+++ b/src/test/regress/sql/hw_partition_interval_check_syntax.sql
@@ -0,0 +1,23 @@
+create table partiton_table_001(
+COL_1 bigint,
+COL_2 TIMESTAMP WITHOUT TIME ZONE,
+COL_3 bool,
+COL_4 decimal
+)
+PARTITION BY RANGE (COL_4)
+INTERVAL (10000)
+(
+PARTITION partiton_table_001_p1 VALUES LESS THAN (1000)
+);
+
+create table partiton_table_001(
+COL_1 bigint,
+COL_2 TIMESTAMP WITHOUT TIME ZONE,
+COL_3 bool,
+COL_4 decimal
+)
+PARTITION BY RANGE (COL_2)
+INTERVAL ('2018-1-1')
+(
+PARTITION partiton_table_001_p1 VALUES LESS THAN ('2020-03-01')
+);