diff --git a/ge/ge_local_engine/ops_kernel_store/ge_local_ops_kernel_builder.cc b/ge/ge_local_engine/ops_kernel_store/ge_local_ops_kernel_builder.cc
index 33aa407d..9dc7d6a1 100644
--- a/ge/ge_local_engine/ops_kernel_store/ge_local_ops_kernel_builder.cc
+++ b/ge/ge_local_engine/ops_kernel_store/ge_local_ops_kernel_builder.cc
@@ -22,9 +22,11 @@
 #include "graph/utils/node_utils.h"
 #include "graph/utils/tensor_utils.h"
 #include "graph/utils/type_utils.h"
+#include "graph/compute_graph.h"
 #include "ge_local_engine/ops_kernel_store/op/op_factory.h"
 #include "ge_local_engine/common/constant/constant.h"
 #include "register/ops_kernel_builder_registry.h"
+#include "framework/common/debug/log.h"
 
 namespace ge {
 namespace ge_local {
@@ -34,6 +36,7 @@ namespace {
 const char *const kConstantOpType = "Constant";
 const char *const kConstantOpAttrName = "value";
 const char *const kDataOpType = "Data";
+const char *const ATTR_NAME_FORCE_UNKNOWN_SHAPE = "_force_unknown_shape";
 }  // namespace
 
 GeLocalOpsKernelBuilder::~GeLocalOpsKernelBuilder() {
@@ -161,13 +164,24 @@ Status GeLocalOpsKernelBuilder::CalcConstantStrMemSize(const OpDescPtr &op_desc,
 }
 
 Status GeLocalOpsKernelBuilder::GenerateTask(const Node &node, RunContext &context, std::vector<domi::TaskDef> &tasks) {
-  bool is_shape_unknown = false;
-  if (NodeUtils::GetNodeUnknownShapeStatus(node, is_shape_unknown) == GRAPH_SUCCESS) {
-    if (is_shape_unknown) {
-      GELOGI("op:%s is unknown shape, does not need to generate task",
-             node.GetName().c_str());
-      return SUCCESS;
+  bool is_in_unknown_subgraph = false;
+  bool forced_unknown = false;
+  for (const auto &node : node.GetOwnerComputeGraph()->GetDirectNode()) {
+    GE_CHK_GRAPH_STATUS_RET(ge::NodeUtils::GetNodeUnknownShapeStatus(*node, is_in_unknown_subgraph),
+                            "[Get][ShapeStatus] of node[%s] failed!", node->GetName().c_str());
+    if (is_in_unknown_subgraph) {
+      break;
     }
+    if (AttrUtils::GetBool(node->GetOpDesc(), ATTR_NAME_FORCE_UNKNOWN_SHAPE, forced_unknown) && forced_unknown) {
+      GELOGD("node %s was marked as unknown shape.", node->GetName().c_str());
+      is_in_unknown_subgraph = true;
+      break;
+    }
+  }
+  if (is_in_unknown_subgraph) {
+    GELOGI("op:%s is in unknown shape subgraph, does not need to generate task",
+           node.GetName().c_str());
+    return SUCCESS;
   }
   string name = node.GetName();
   string type = node.GetType();
diff --git a/ge/graph/passes/reshape_remove_pass.cc b/ge/graph/passes/reshape_remove_pass.cc
index 10937cf1..79ab88b5 100755
--- a/ge/graph/passes/reshape_remove_pass.cc
+++ b/ge/graph/passes/reshape_remove_pass.cc
@@ -27,6 +27,7 @@
 namespace ge {
 namespace {
 const int kReshapeDataIndex = 0;
+const char* const ATTR_NAME_FORCE_UNKNOWN_SHAPE = "_force_unknown_shape";
 enum OpHashValue {
   kReshapeType = 0,
   kReformatType = 1,
@@ -45,6 +46,25 @@ Status ReshapeRemovePass::Run(NodePtr &node) {
   int key = kToBeDeleteOp.find(node->GetType()) == kToBeDeleteOp.end() ? kOpNoDelete : kToBeDeleteOp[node->GetType()];
   switch (key) {
     case kReshapeType: {
+      bool is_in_unknown_shape_graph = false;
+      bool forced_unknown = false;
+      for (const auto &node : node->GetOwnerComputeGraph()->GetDirectNode()) {
+        GE_CHK_GRAPH_STATUS_RET(ge::NodeUtils::GetNodeUnknownShapeStatus(*node, is_in_unknown_shape_graph),
+                                "[Get][ShapeStatus] of node[%s] failed!", node->GetName().c_str());
+        if (is_in_unknown_shape_graph) {
+          break;
+        }
+        if (AttrUtils::GetBool(node->GetOpDesc(), ATTR_NAME_FORCE_UNKNOWN_SHAPE, forced_unknown) && forced_unknown) {
+          GELOGD("node %s was marked as unknown shape.", node->GetName().c_str());
+          is_in_unknown_shape_graph = true;
+          break;
+        }
+      }
+      if (is_in_unknown_shape_graph) {
+        GELOGI("op:%s is in unknown shape graph, can not be deleted.", node->GetName().c_str());
+        return SUCCESS;
+      }
+
       bool is_shape_unknown = false;
       if (NodeUtils::GetNodeUnknownShapeStatus(*node, is_shape_unknown) == GRAPH_SUCCESS) {
         if (is_shape_unknown) {