diff --git a/tests/system-test/2-query/csum.py b/tests/system-test/2-query/csum.py
index aacde5234b001593334d9c8e43f19691df8d2d55..75509124ee84a488c10dfb6597f337a05b96ae7b 100644
--- a/tests/system-test/2-query/csum.py
+++ b/tests/system-test/2-query/csum.py
@@ -83,6 +83,8 @@ class TDTestCase:
 
                 tdSql.query(f"select {col} {alias} from {table_expr} {pre_condition}")
                 pre_data = np.array(tdSql.queryResult)[np.array(tdSql.queryResult) != None]
+                if (platform.system().lower() == 'windows' and pre_result.dtype == 'int32'):
+                    pre_result = np.array(pre_result, dtype = 'int64')
                 print("data is ", pre_data)
                 pre_csum = np.cumsum(pre_data)
                 tdSql.query(self.csum_query_form(
diff --git a/tests/system-test/2-query/function_diff.py b/tests/system-test/2-query/function_diff.py
index 325bd2bc8ebd79f3e58daf6690492dc8ca329dda..272cf4ef248d30608a1e91a8e1363865464b9ce8 100644
--- a/tests/system-test/2-query/function_diff.py
+++ b/tests/system-test/2-query/function_diff.py
@@ -83,6 +83,8 @@ class TDTestCase:
 
                 tdSql.query(f"select {col} {alias} from {table_expr} {pre_condition}")
                 pre_data = np.array(tdSql.queryResult)[np.array(tdSql.queryResult) != None]
+                if (platform.system().lower() == 'windows' and pre_result.dtype == 'int32'):
+                    pre_result = np.array(pre_result, dtype = 'int64')
                 pre_diff = np.diff(pre_data)
                 # trans precision for data
                 tdSql.query(self.diff_query_form(
@@ -127,6 +129,8 @@ class TDTestCase:
             tdSql.query(f"select {col} from {table_expr} {re.sub('limit [0-9]*|offset [0-9]*','',condition)}")
             offset_val = condition.split("offset")[1].split(" ")[1] if "offset" in condition else 0
             pre_result = np.array(tdSql.queryResult)[np.array(tdSql.queryResult) != None]
+            if (platform.system().lower() == 'windows' and pre_result.dtype == 'int32'):
+                pre_result = np.array(pre_result, dtype = 'int64')
             pre_diff = np.diff(pre_result)[offset_val:]
             tdSql.query(self.diff_query_form(
                 col=col, alias=alias, table_expr=table_expr, condition=condition