diff --git a/ge/graph/load/model_manager/model_manager.cc b/ge/graph/load/model_manager/model_manager.cc
index 0273b77e..97ad0054 100755
--- a/ge/graph/load/model_manager/model_manager.cc
+++ b/ge/graph/load/model_manager/model_manager.cc
@@ -297,10 +297,11 @@ Status ModelManager::LoadModelOnline(uint32_t &model_id, const shared_ptr<ge::Ge
   if (model_id == INVALID_MODEL_ID) {
     GenModelId(&model_id);
   }
-
+  auto name_to_model = ge_root_model->GetSubgraphInstanceNameToModel();
   string model_name = "";
   bool is_shape_unknown = ge_root_model->GetRootGraph()->GetGraphUnknownFlag();
-  if (is_shape_unknown || GetContext().GetHostExecFlag()) {
+  // if multi subgraph is known, do hybrid load process
+  if (is_shape_unknown || GetContext().GetHostExecFlag() || (name_to_model.size() > 1)) {
     return DoLoadHybridModelOnline(model_id, model_name, ge_root_model, listener);
   }
 
@@ -322,7 +323,6 @@ Status ModelManager::LoadModelOnline(uint32_t &model_id, const shared_ptr<ge::Ge
   auto root_graph = ge_root_model->GetRootGraph();
   GE_CHECK_NOTNULL(root_graph);
   string root_model_name = root_graph->GetName();
-  auto name_to_model = ge_root_model->GetSubgraphInstanceNameToModel();
   GeModelPtr ge_model = name_to_model[root_model_name];
   Status ret = SUCCESS;
   do {
diff --git a/ge/graph/passes/net_output_pass.cc b/ge/graph/passes/net_output_pass.cc
index c553607f..37de2af9 100644
--- a/ge/graph/passes/net_output_pass.cc
+++ b/ge/graph/passes/net_output_pass.cc
@@ -202,6 +202,8 @@ Status NetOutputPass::UpdateNetOutputDesc(const ge::NodePtr &net_output) {
     GE_CHECK_NOTNULL(src_op_desc);
     uint32_t peer_index = static_cast<uint32_t>(in_anchor->GetPeerOutAnchor()->GetIdx());
     ge::GeTensorDesc output_in_desc = src_op_desc->GetOutputDesc(peer_index);
+    output_in_desc.SetFormat(FORMAT_ND);
+    output_in_desc.SetOriginFormat(FORMAT_ND);
     if (net_output_desc->UpdateInputDesc(index, output_in_desc) != GRAPH_SUCCESS) {
       GELOGE(INTERNAL_ERROR, "Update input desc failed, index:%u.", index);
       return INTERNAL_ERROR;