diff --git a/ge/graph/passes/attach_stream_label_pass.cc b/ge/graph/passes/attach_stream_label_pass.cc
index 75599c45..d8c81e92 100644
--- a/ge/graph/passes/attach_stream_label_pass.cc
+++ b/ge/graph/passes/attach_stream_label_pass.cc
@@ -24,34 +24,31 @@ namespace ge {
 Status AttachStreamLabelPass::Run(ComputeGraphPtr graph) {
   GELOGD("AttachStreamLabelPass Enter.");
 
-  FindNodes(graph);
-  for (const auto &node : need_label_nodes_) {
-    GE_CHK_STATUS_RET(UpdateCondBranch(node), "Update cond branch failed, start node:%s.", node->GetName().c_str());
+  std::vector<NodePtr> need_label_nodes;
+  std::vector<NodePtr> enter_nodes;
+  std::map<NodePtr, NodePtr> branch_head_nodes;
+  FindNodes(graph, need_label_nodes, enter_nodes, branch_head_nodes);
+  for (const auto &node : need_label_nodes) {
+    GE_CHK_STATUS_RET(UpdateCondBranch(node, branch_head_nodes), "Update cond branch failed, start node:%s.", node->GetName().c_str());
   }
-  GE_CHK_STATUS_RET(UpdateEnterNode(), "UpdateEnterNode failed.");
+  GE_CHK_STATUS_RET(UpdateEnterNode(enter_nodes), "UpdateEnterNode failed.");
 
   GELOGD("AttachStreamLabelPass Leave.");
   return SUCCESS;
 }
 
 ///
-/// @brief Clear Status, used for subgraph pass
-/// @return
-///
-Status AttachStreamLabelPass::ClearStatus() {
-  stream_switch_nodes_.clear();
-  need_label_nodes_.clear();
-  enter_nodes_.clear();
-  branch_head_nodes_.clear();
-  return SUCCESS;
-}
-
-///
 /// @brief Find StreamSwitch / StreamMerge / Enter node
 /// @param [in] graph
+/// @param [out] need_label_nodes
+/// @param [out] enter_nodes
+/// @param [out] branch_head_nodes
 /// @return void
 ///
-void AttachStreamLabelPass::FindNodes(const ComputeGraphPtr &graph) {
+void AttachStreamLabelPass::FindNodes(const ComputeGraphPtr &graph, std::vector<NodePtr> &need_label_nodes,
+                                      std::vector<NodePtr> &enter_nodes,
+                                      std::map<NodePtr, NodePtr> &branch_head_nodes) {
+  std::vector<NodePtr> stream_switch_nodes;
   for (const NodePtr &node : graph->GetDirectNode()) {
     const auto &op_desc = node->GetOpDesc();
     if (op_desc == nullptr) {
@@ -59,29 +56,31 @@ void AttachStreamLabelPass::FindNodes(const ComputeGraphPtr &graph) {
     }
     const std::string &type = op_desc->GetType();
     if ((type == STREAMSWITCH) && op_desc->HasAttr(ATTR_NAME_SWITCH_TRUE_BRANCH_FLAG)) {
-      stream_switch_nodes_.emplace_back(node);
+      stream_switch_nodes.emplace_back(node);
     } else if ((type == STREAMMERGE) && !op_desc->HasAttr(ATTR_NAME_NEXT_ITERATION)) {
-      need_label_nodes_.emplace_back(node);
+      need_label_nodes.emplace_back(node);
     } else if ((type == ENTER) || (type == REFENTER)) {
-      enter_nodes_.emplace_back(node);
+      enter_nodes.emplace_back(node);
     }
   }
 
-  for (const auto &node : stream_switch_nodes_) {
+  for (const auto &node : stream_switch_nodes) {
     for (const auto &out_ctrl_node : node->GetOutControlNodes()) {
       GELOGD("branch_head_node %s of stream_switch %s.", out_ctrl_node->GetName().c_str(), node->GetName().c_str());
-      branch_head_nodes_[out_ctrl_node] = node;
+      branch_head_nodes[out_ctrl_node] = node;
     }
-    need_label_nodes_.emplace_back(node);
+    need_label_nodes.emplace_back(node);
   }
 }
 
 ///
 /// @brief update cond branch
 /// @param [in] node
+/// @param [in] branch_head_nodes
 /// @return Status
 ///
-Status AttachStreamLabelPass::UpdateCondBranch(const NodePtr &node) {
+Status AttachStreamLabelPass::UpdateCondBranch(const NodePtr &node,
+                                               const std::map<NodePtr, NodePtr> &branch_head_nodes) {
   std::string stream_label;
   if (AttachFlag(node, stream_label) != SUCCESS) {
     GELOGE(FAILED, "Attach flag for node %s failed.", node->GetName().c_str());
@@ -103,8 +102,9 @@ Status AttachStreamLabelPass::UpdateCondBranch(const NodePtr &node) {
     const std::string &type = cur_node->GetType();
     for (const auto &out_node : cur_node->GetOutAllNodes()) {
       const std::string &out_type = out_node->GetType();
+      const auto &iter = branch_head_nodes.find(node);
       bool stop_flag = (end_type_set.count(out_type) > 0) ||
-                       ((branch_head_nodes_.count(out_node) > 0) && (branch_head_nodes_[out_node] != node)) ||
+                       ((iter != branch_head_nodes.end()) && (iter->second != node)) ||
                        (((type == ENTER) || (type == REFENTER)) && (out_type != STREAMACTIVE));
       if (!stop_flag) {
         nodes.push(out_node);
@@ -178,11 +178,12 @@ Status AttachStreamLabelPass::AttachFlag(const NodePtr &node, std::string &strea
 
 ///
 /// @brief Update stream_label start with enter nodes
+/// @param [in] enter_nodes
 /// @return Status
 ///
-Status AttachStreamLabelPass::UpdateEnterNode() {
+Status AttachStreamLabelPass::UpdateEnterNode(const std::vector<NodePtr> &enter_nodes) {
   std::unordered_map<NodePtr, std::vector<NodePtr>> enter_active_map;
-  for (const auto &enter_node : enter_nodes_) {
+  for (const auto &enter_node : enter_nodes) {
     for (const auto &out_ctrl_node : enter_node->GetOutControlNodes()) {
       if (out_ctrl_node->GetType() != STREAMACTIVE) {
         continue;
@@ -214,11 +215,11 @@ Status AttachStreamLabelPass::UpdateEnterNode() {
       return INTERNAL_ERROR;
     }
 
-    std::stack<NodePtr> enter_nodes;
+    std::stack<NodePtr> nodes;
     for (const auto &enter_node : pair.second) {
-      enter_nodes.emplace(enter_node);
+      nodes.emplace(enter_node);
     }
-    if (UpdateLoopBranch(enter_nodes, active_label_list[0]) != SUCCESS) {
+    if (UpdateLoopBranch(nodes, active_label_list[0]) != SUCCESS) {
       GELOGE(FAILED, "Update stream_label for loop_branch failed.");
       return FAILED;
     }
diff --git a/ge/graph/passes/attach_stream_label_pass.h b/ge/graph/passes/attach_stream_label_pass.h
index ad71d58f..a1600a58 100755
--- a/ge/graph/passes/attach_stream_label_pass.h
+++ b/ge/graph/passes/attach_stream_label_pass.h
@@ -25,26 +25,25 @@ class AttachStreamLabelPass : public GraphPass {
  public:
   Status Run(ComputeGraphPtr graph);
 
-  ///
-  /// @brief Clear Status, used for subgraph pass
-  /// @return
-  ///
-  Status ClearStatus() override;
-
  private:
   ///
   /// @brief Find StreamSwitch / StreamMerge / Enter node
   /// @param [in] graph
+  /// @param [out] need_label_nodes
+  /// @param [out] enter_nodes
+  /// @param [out] branch_head_nodes
   /// @return void
   ///
-  void FindNodes(const ComputeGraphPtr &graph);
+  void FindNodes(const ComputeGraphPtr &graph, std::vector<NodePtr> &need_label_nodes,
+                 std::vector<NodePtr> &enter_nodes, std::map<NodePtr, NodePtr> &branch_head_nodes);
 
   ///
   /// @brief update cond branch
   /// @param [in] node
+  /// @param [in] branch_head_nodes
   /// @return Status
   ///
-  Status UpdateCondBranch(const NodePtr &node);
+  Status UpdateCondBranch(const NodePtr &node, const std::map<NodePtr, NodePtr> &branch_head_nodes);
 
   ///
   /// @brief attach flag
@@ -64,9 +63,10 @@ class AttachStreamLabelPass : public GraphPass {
 
   ///
   /// @brief Update stream_label start with enter nodes
+  /// @param [in] enter_nodes
   /// @return Status
   ///
-  Status UpdateEnterNode();
+  Status UpdateEnterNode(const std::vector<NodePtr> &enter_nodes);
 
   ///
   /// @brief Set stream_label for enter_nodes
@@ -75,11 +75,6 @@ class AttachStreamLabelPass : public GraphPass {
   /// @return Status
   ///
   static Status SetEnterLabel(const std::vector<NodePtr> &enter_nodes, const NodePtr &active_node);
-
-  std::vector<NodePtr> stream_switch_nodes_;
-  std::vector<NodePtr> need_label_nodes_;
-  std::vector<NodePtr> enter_nodes_;
-  std::unordered_map<NodePtr, NodePtr> branch_head_nodes_;
 };
 }  // namespace ge
 #endif  // GE_GRAPH_PASSES_ATTACH_STREAM_LABEL_PASS_H_