diff --git a/tests/milvus_python_test/test_index.py b/tests/milvus_python_test/test_index.py
index 39aadb9d33..b253cf02a3 100644
--- a/tests/milvus_python_test/test_index.py
+++ b/tests/milvus_python_test/test_index.py
@@ -1208,9 +1208,9 @@ class TestCreateIndexParamsInvalid(object):
         nlist = index_params["nlist"]
         logging.getLogger().info(index_params)
         status, ids = connect.add_vectors(table, vectors)
-        # if not isinstance(index_type, int) or not isinstance(nlist, int):
-        with pytest.raises(Exception) as e:
+        if (not index_type) or (not nlist) or (not isinstance(index_type, IndexType)) or (not isinstance(nlist, int)):
+            with pytest.raises(Exception) as e:
+                status = connect.create_index(table, index_params)
+        else:
             status = connect.create_index(table, index_params)
-        # else:
-        #     status = connect.create_index(table, index_params)
-        #     assert not status.OK()
+            assert not status.OK()
diff --git a/tests/milvus_python_test/utils.py b/tests/milvus_python_test/utils.py
index 159c8407c6..1686ad7129 100644
--- a/tests/milvus_python_test/utils.py
+++ b/tests/milvus_python_test/utils.py
@@ -54,12 +54,12 @@ def gen_long_str(num):
 
 def gen_invalid_ips():
     ips = [
-            "255.0.0.0",
-            "255.255.0.0",
-            "255.255.255.0",
-            "255.255.255.255",
+            # "255.0.0.0",
+            # "255.255.0.0",
+            # "255.255.255.0",
+            # "255.255.255.255",
             "127.0.0",
-            "123.0.0.2",
+            # "123.0.0.2",
             "12-s",
             " ",
             "12 s",
@@ -114,12 +114,12 @@ def gen_invalid_uris():
 
             # invalid ip
             "tcp:// :%s" % port,
-            "tcp://123.0.0.1:%s" % port,
+            # "tcp://123.0.0.1:%s" % port,
             "tcp://127.0.0:%s" % port,
             "tcp://255.0.0.0:%s" % port,
-            "tcp://255.255.0.0:%s" % port,
-            "tcp://255.255.255.0:%s" % port,
-            "tcp://255.255.255.255:%s" % port,
+            # "tcp://255.255.0.0:%s" % port,
+            # "tcp://255.255.255.0:%s" % port,
+            # "tcp://255.255.255.255:%s" % port,
             "tcp://\n:%s" % port,
 
     ]
@@ -263,9 +263,7 @@ def gen_invalid_index_types():
 
 def gen_invalid_nlists():
     nlists = [
-            0,
             -1,
-            1000000000000001,
             # None,
             [1,2,3],
             (1,2),
@@ -549,4 +547,4 @@ if __name__ == "__main__":
         p.join()
     time.sleep(3)
     status, count = milvus.get_table_row_count(table)
-    assert count == process_num * loop_num
\ No newline at end of file
+    assert count == process_num * loop_num