diff --git a/ge/graph/passes/mark_agnostic_pass.cc b/ge/graph/passes/mark_agnostic_pass.cc
index 77fa64fb..1ddd571f 100644
--- a/ge/graph/passes/mark_agnostic_pass.cc
+++ b/ge/graph/passes/mark_agnostic_pass.cc
@@ -21,7 +21,7 @@ namespace ge {
 Status MarkAgnosticPass::Run(ComputeGraphPtr graph) {
   for (const auto &node : graph->GetDirectNode()) {
     auto node_type = NodeUtils::GetNodeType(*node);
-    if (node_type == SWITCH || node_type == REFSWITCH || node_type == SWITCHN) {
+    if (node_type == SWITCH || node_type == SWITCHN) {
       GELOGD("Mark format agnostic and continuous for switch node %s", node->GetName().c_str());
       const OpDescPtr op_desc = node->GetOpDesc();
       const GeTensorDescPtr op_tensor = op_desc->MutableInputDesc(0);
@@ -34,13 +34,13 @@ Status MarkAgnosticPass::Run(ComputeGraphPtr graph) {
       AttrUtils::SetListInt(node->GetOpDesc(), "_format_agnostic_except_input", std::vector<int64_t>({1}));
       continue;
     }
-    if (node_type == IDENTITY) {
+    if (node_type == IDENTITY || node_type == REFMERGE || node_type == REFSWITCH) {
       GELOGD("Mark format agnostic for identity node %s", node->GetName().c_str());
       AttrUtils::SetInt(node->GetOpDesc(), "_format_agnostic", 1);
       AttrUtils::SetListInt(node->GetOpDesc(), "_format_agnostic_except_input", std::vector<int64_t>({1}));
       continue;
     }
-    if (node_type == MERGE || node_type == REFMERGE) {
+    if (node_type == MERGE) {
       GELOGD("Mark format agnostic and continuous for merge node %s", node->GetName().c_str());
       const OpDescPtr op_desc = node->GetOpDesc();
       const GeTensorDescPtr op_tensor = op_desc->MutableOutputDesc(0);
diff --git a/ge/graph/preprocess/graph_preprocess.cc b/ge/graph/preprocess/graph_preprocess.cc
index f90c0d80..98371426 100644
--- a/ge/graph/preprocess/graph_preprocess.cc
+++ b/ge/graph/preprocess/graph_preprocess.cc
@@ -117,6 +117,7 @@
 #include "graph/passes/variable_op_pass.h"
 #include "graph/passes/variable_prepare_op_pass.h"
 #include "graph/passes/variable_ref_delete_op_pass.h"
+#include "graph/passes/mark_agnostic_pass.h"
 
 
 namespace ge {
@@ -1626,6 +1627,7 @@ Status GraphPrepare::PrepareOptimize() {
   try {
     (void)original_graph_passes.AddPass("PrepareOptimize::ShapeOperateOpRemovePass", new ShapeOperateOpRemovePass);
     (void)original_graph_passes.AddPass("PrepareOptimize::ReplaceTransShapePass", new ReplaceTransShapePass);
+    (void)original_graph_passes.AddPass("PrepareOptimize::MarkAgnosticPass", new MarkAgnosticPass);
   } catch (std::bad_alloc &e) {
     GELOGE(INTERNAL_ERROR, "Add pass failed, bad memory allocation occurs.");
     return INTERNAL_ERROR;