diff --git a/mindspore/lite/CMakeLists.txt b/mindspore/lite/CMakeLists.txt
index 679c1db108..e5406d4f0a 100644
--- a/mindspore/lite/CMakeLists.txt
+++ b/mindspore/lite/CMakeLists.txt
@@ -35,7 +35,7 @@ option(ENABLE_VERBOSE "" off)
 option(ENABLE_SSE "if x86_64 support SSE instruction set" off)
 option(ENABLE_AVX "if x86_64 support SSE instruction set" off)
 option(ENABLE_MINDRT "if support mindrt" on)
-option(SUBGRAPH_SPLIT "if support sub graph split" on)
+option(SUBGRAPH_SPLIT "if support sub graph split" off)
 
 set(DIR_PREFIX mindspore-lite)
 set(MS_VERSION ${MS_VERSION_MAJOR}.${MS_VERSION_MINOR}.${MS_VERSION_REVISION})
diff --git a/mindspore/lite/src/sub_graph_split.cc b/mindspore/lite/src/sub_graph_split.cc
index ee2fb84d95..237c3e8051 100644
--- a/mindspore/lite/src/sub_graph_split.cc
+++ b/mindspore/lite/src/sub_graph_split.cc
@@ -268,13 +268,18 @@ void SearchSubGraph::SubgraphFusion() {
 
   return;
 }
-
-void SearchSubGraph::SubGraphSplitByOutput() {
-  if (!context_->IsGpuEnabled() || output_nodes_.size() > 4) {
-    return;
+bool SearchSubGraph::ModelValid() {
+  if (context_->IsNpuEnabled()) {
+    return false;
+  }
+  if (context_->IsGpuEnabled()) {
+    return false;
   }
+  return false;
+}
 
-  if (context_->IsCpuFloat16Enabled() || context_->IsGpuFloat16Enabled()) {
+void SearchSubGraph::SubGraphSplitByOutput() {
+  if (!ModelValid()) {
     return;
   }
 
diff --git a/mindspore/lite/src/sub_graph_split.h b/mindspore/lite/src/sub_graph_split.h
index 2202293d63..5d9697caf2 100644
--- a/mindspore/lite/src/sub_graph_split.h
+++ b/mindspore/lite/src/sub_graph_split.h
@@ -63,6 +63,7 @@ class SearchSubGraph {
   void InitSubgraphDevice();
   void SubgraphFusion();
   void InitMainGraphDevice();
+  bool ModelValid();
 
  private:
   const InnerContext *context_ = nullptr;