diff --git a/mindspore/ccsrc/optimizer/opt.cc b/mindspore/ccsrc/optimizer/opt.cc
index e6addae76e..5e893cf1aa 100644
--- a/mindspore/ccsrc/optimizer/opt.cc
+++ b/mindspore/ccsrc/optimizer/opt.cc
@@ -92,18 +92,16 @@ AnfNodePtr Substitution::operator()(const OptimizerPtr &optimizer, const AnfNode
   return result;
 }
 
-static bool inline isTraversable(const AnfNodePtr &node, const AnfNodeSet &all_nodes) {
-  if (node->isa<CNode>() || node->isa<Parameter>()) {
+static bool isTraversable(const AnfNodePtr &node) {
+  if (node == nullptr) {
     return false;
   }
-
+  if (node->isa<CNode>() || node->isa<Parameter>()) {
+    return true;
+  }
   if (IsValueNode<FuncGraph>(node) || IsValueNode<RefKey>(node)) {
-    if (!all_nodes.contains(node)) {
-      return false;
-    }
     return true;
   }
-
   return false;
 }
 
@@ -126,15 +124,9 @@ bool SubstitutionList::ApplyTransform(const OptimizerPtr &optimizer, const AnfNo
     todo.pop_front();
 
     // check whether this node has been matched.
-    if (node == nullptr || node->seen_ == seen) {
-      continue;
-    }
-
-    auto fg = node->func_graph();
-    if (!(fg != nullptr && fg->manager() != nullptr) && !isTraversable(node, all_nodes)) {
+    if (node == nullptr || node->seen_ == seen || !isTraversable(node) || !all_nodes.contains(node)) {
       continue;
     }
-
     node->seen_ = seen;
 
     // select nodes that this transform can be applied.
diff --git a/tests/ut/cpp/common/py_func_graph_fetcher.h b/tests/ut/cpp/common/py_func_graph_fetcher.h
index 9d374fcd60..98552a96b5 100644
--- a/tests/ut/cpp/common/py_func_graph_fetcher.h
+++ b/tests/ut/cpp/common/py_func_graph_fetcher.h
@@ -22,7 +22,6 @@
 #include "ir/primitive.h"
 #include "ir/manager.h"
 #include "ir/func_graph.h"
-#include "ir/func_graph_cloner.h"
 #include "pipeline/parse/parse_base.h"
 #include "pipeline/parse/parse.h"
 #include "./common.h"
@@ -48,10 +47,9 @@ class PyFuncGraphFetcher {
       py::function fn = mindspore::parse::python_adapter::CallPyFn(model_path_.c_str(), func_name.c_str(), args...);
       mindspore::FuncGraphPtr func_graph = mindspore::parse::ParsePythonCode(fn);
       if (doResolve_) {
-        std::shared_ptr<mindspore::FuncGraphManager> manager = mindspore::Manage(func_graph, true);
+        std::shared_ptr<mindspore::FuncGraphManager> manager = mindspore::Manage(func_graph, false);
         mindspore::parse::python_adapter::set_use_signature_in_resolve(false);
         mindspore::parse::ResolveAll(manager);
-        func_graph = BasicClone(func_graph);
       }
       return func_graph;
     } catch (py::error_already_set& e) {
@@ -73,9 +71,8 @@ class PyFuncGraphFetcher {
       py::function fn = mindspore::parse::python_adapter::GetPyFn(path.c_str(), func_name.c_str());
       mindspore::FuncGraphPtr func_graph = mindspore::parse::ParsePythonCode(fn);
       if (doResolve_) {
-        std::shared_ptr<mindspore::FuncGraphManager> manager = mindspore::Manage(func_graph, true);
+        std::shared_ptr<mindspore::FuncGraphManager> manager = mindspore::Manage(func_graph, false);
         mindspore::parse::ResolveAll(manager);
-        func_graph = BasicClone(func_graph);
       }
       return func_graph;
     } catch (py::error_already_set& e) {