diff --git a/mindspore/ccsrc/common/graph_kernel/adapter/expander.cc b/mindspore/ccsrc/common/graph_kernel/adapter/expander.cc
index 4864f7bf51c..aa50dfdbcea 100644
--- a/mindspore/ccsrc/common/graph_kernel/adapter/expander.cc
+++ b/mindspore/ccsrc/common/graph_kernel/adapter/expander.cc
@@ -25,6 +25,7 @@
 #include "common/graph_kernel/substitute_dropout.h"
 #include "common/graph_kernel/graph_kernel_helper.h"
 #include "common/graph_kernel/adapter/callback_impl.h"
+#include "kernel/common_utils.h"
 
 namespace mindspore::graphkernel {
 ExpanderPtr GetExpander(const AnfNodePtr &node, bool abstract) {
@@ -55,6 +56,13 @@ ExpanderPtr GetExpander(const AnfNodePtr &node, bool abstract) {
 }
 
 FuncGraphPtr TryExpandCNode(const AnfNodePtr &node, const std::function<bool(const CNodePtr &kernel_node)> &func) {
+  auto processor = kernel::GetStrProcessorFromContext();
+  if (processor == kernel::kProcessorAiCore) {
+    auto use_expand_fallback = common::GetEnv("EXPANDERFALLBACK");
+    if (use_expand_fallback.empty()) {
+      return nullptr;
+    }
+  }
   auto expand_fg = GetCNodeFuncGraph(graphkernel::GetExpander(node)->Run(node));
   if (expand_fg != nullptr) {
     auto todos = TopoSort(expand_fg->get_return());
diff --git a/mindspore/ccsrc/common/graph_kernel/expanders/bias_add.cc b/mindspore/ccsrc/common/graph_kernel/expanders/bias_add.cc
index 0643995ec10..e47f9b6c3f7 100644
--- a/mindspore/ccsrc/common/graph_kernel/expanders/bias_add.cc
+++ b/mindspore/ccsrc/common/graph_kernel/expanders/bias_add.cc
@@ -36,6 +36,17 @@ class BiasAdd : public OpDesc {
   ~BiasAdd() = default;
 
  protected:
+  bool CheckInputs() override {
+    auto it = std::find_if(std::begin(inputs_info_), std::end(inputs_info_), [](const inner::NodeBase &input) {
+      return input.type != kNumberTypeFloat32 && input.type != kNumberTypeFloat16;
+    });
+    if (it != std::end(inputs_info_)) {
+      MS_LOG(INFO) << "In BiasAdd, input's dtype must be float16 or float32, But input's type is " << it->type;
+      return false;
+    }
+    return true;
+  }
+
   NodePtrList Expand(const NodePtrList &inputs) override {
     auto input_x = inputs[0];
     auto input_y = inputs[1];
diff --git a/mindspore/python/mindspore/_extends/graph_kernel/expanders/sigmoid_cross_entropy_with_logits.py b/mindspore/python/mindspore/_extends/graph_kernel/expanders/sigmoid_cross_entropy_with_logits.py
index 873a3ca2344..b9f4ae5cc2c 100644
--- a/mindspore/python/mindspore/_extends/graph_kernel/expanders/sigmoid_cross_entropy_with_logits.py
+++ b/mindspore/python/mindspore/_extends/graph_kernel/expanders/sigmoid_cross_entropy_with_logits.py
@@ -1,4 +1,4 @@
-# Copyright 2021 Huawei Technologies Co., Ltd
+# Copyright 2021-2022 Huawei Technologies Co., Ltd
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/mindspore/python/mindspore/_extends/graph_kernel/expanders/squared_difference.py b/mindspore/python/mindspore/_extends/graph_kernel/expanders/squared_difference.py
index 316b000e346..ed707cdc899 100644
--- a/mindspore/python/mindspore/_extends/graph_kernel/expanders/squared_difference.py
+++ b/mindspore/python/mindspore/_extends/graph_kernel/expanders/squared_difference.py
@@ -13,6 +13,7 @@
 # limitations under the License.
 # ===========================================================================
 """generate json desc for squared_difference"""
+from mindspore._extends.graph_kernel.model.model import GraphKernelUnsupportedException as GKException
 from ._utils import Expander, ExpanderInfoValidator as VLD
 
 
@@ -20,6 +21,18 @@ from ._utils import Expander, ExpanderInfoValidator as VLD
 class SquaredDifference(Expander):
     """SquaredDifference expander"""
 
+    def __init__(self, expand_info):
+        super().__init__(expand_info)
+        self.dtype_x = self.inputs[0]['data_type']
+        self.dtype_y = self.inputs[1]['data_type']
+
+    def _check(self):
+        if self.dtype_x == "float64" or self.dtype_y == "float64":
+            raise GKException("For 'SquaredDifference', the inputs data type must not be float64")
+        if self.dtype_x != self.dtype_y:
+            raise GKException("For 'SquaredDifference', the inputs data type should be same, but got {} and {}"
+                              .format(self.dtype_x, self.dtype_y))
+
     def _expand(self, graph_builder):
         input_x = self.inputs[0]
         input_y = self.inputs[1]
diff --git a/tests/st/ops/graph_kernel/test_equal_count.py b/tests/st/ops/graph_kernel/test_equal_count.py
index f127d6e650b..011e6a5921e 100644
--- a/tests/st/ops/graph_kernel/test_equal_count.py
+++ b/tests/st/ops/graph_kernel/test_equal_count.py
@@ -72,7 +72,7 @@ def test_gpu_fp32():
     basic_test(np.float32)
 
 
-@pytest.mark.level0
+@pytest.mark.level2
 @pytest.mark.platform_x86_ascend_training
 @pytest.mark.env_onecard
 def test_ascend_graph_mode_fp32():
@@ -85,7 +85,7 @@ def test_ascend_graph_mode_fp32():
     basic_test(np.float32)
 
 
-@pytest.mark.level0
+@pytest.mark.level2
 @pytest.mark.platform_x86_ascend_training
 @pytest.mark.env_onecard
 def test_ascend_pynative_mode_fp32():