diff --git a/executor/executor_test.go b/executor/executor_test.go
index aafda158798c1..f8d694e1a215b 100644
--- a/executor/executor_test.go
+++ b/executor/executor_test.go
@@ -125,6 +125,7 @@ var _ = SerialSuites(&testFlushSuite{})
 var _ = SerialSuites(&testAutoRandomSuite{&baseTestSuite{}})
 var _ = SerialSuites(&testClusterTableSuite{})
 var _ = SerialSuites(&testSuite10{&baseTestSuite{}})
+var _ = SerialSuites(&testPrepareSerialSuite{&baseTestSuite{}})
 
 type testSuite struct{ *baseTestSuite }
 type testSuiteP1 struct{ *baseTestSuite }
diff --git a/executor/explainfor_test.go b/executor/explainfor_test.go
index 91f3f538c852a..853eff71d64ac 100644
--- a/executor/explainfor_test.go
+++ b/executor/explainfor_test.go
@@ -123,7 +123,11 @@ func (s *testSuite) TestExplainMetricTable(c *C) {
 		`MemTableScan_5 10000.00 root table:CLUSTER_LOG start_time:2019-12-23 16:10:13, end_time:2019-12-23 16:30:13, node_types:["high_cpu_1","high_memory_1"]`))
 }
 
-func (s *testSuite) TestExplainForConnPlanCache(c *C) {
+type testPrepareSerialSuite struct {
+	*baseTestSuite
+}
+
+func (s *testPrepareSerialSuite) TestExplainForConnPlanCache(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	orgEnable := core.PreparedPlanCacheEnabled()
 	defer func() {
diff --git a/expression/integration_test.go b/expression/integration_test.go
index 281738ceaa65d..9def8b82150b2 100755
--- a/expression/integration_test.go
+++ b/expression/integration_test.go
@@ -5436,7 +5436,7 @@ func (s *testIntegrationSuite) TestCastStrToInt(c *C) {
 	}
 }
 
-func (s *testIntegrationSuite) TestIssue16205(c *C) {
+func (s *testIntegrationSerialSuite) TestIssue16205(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	orgEnable := plannercore.PreparedPlanCacheEnabled()
 	defer func() {
@@ -5490,7 +5490,7 @@ func (s *testIntegrationSuite) TestIssue14146(c *C) {
 	tk.MustQuery("select * from tt").Check(testkit.Rows("<nil>"))
 }
 
-func (s *testIntegrationSuite) TestCacheRegexpr(c *C) {
+func (s *testIntegrationSerialSuite) TestCacheRegexpr(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	orgEnable := plannercore.PreparedPlanCacheEnabled()
 	defer func() {
@@ -5514,7 +5514,7 @@ func (s *testIntegrationSuite) TestCacheRegexpr(c *C) {
 	tk.MustQuery("execute stmt1 using @a").Check(testkit.Rows("R1"))
 }
 
-func (s *testIntegrationSuite) TestCacheRefineArgs(c *C) {
+func (s *testIntegrationSerialSuite) TestCacheRefineArgs(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	orgEnable := plannercore.PreparedPlanCacheEnabled()
 	defer func() {
@@ -5637,7 +5637,7 @@ func (s *testIntegrationSuite) TestCoercibility(c *C) {
 	}, "from t")
 }
 
-func (s *testIntegrationSuite) TestCacheConstEval(c *C) {
+func (s *testIntegrationSerialSuite) TestCacheConstEval(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	orgEnable := plannercore.PreparedPlanCacheEnabled()
 	defer func() {
diff --git a/planner/core/prepare_test.go b/planner/core/prepare_test.go
index 88eda813c5c23..1f88d14018391 100644
--- a/planner/core/prepare_test.go
+++ b/planner/core/prepare_test.go
@@ -392,7 +392,7 @@ func (s *testPrepareSuite) TestPrepareForGroupByItems(c *C) {
 	tk.MustQuery("execute s1 using @a;").Check(testkit.Rows("3"))
 }
 
-func (s *testPrepareSuite) TestPrepareCacheForPartition(c *C) {
+func (s *testPrepareSerialSuite) TestPrepareCacheForPartition(c *C) {
 	defer testleak.AfterTest(c)()
 	store, dom, err := newStoreWithBootstrap()
 	c.Assert(err, IsNil)