diff --git a/lite/src/mge/network_impl.cpp b/lite/src/mge/network_impl.cpp
index 1cfde0fa..ae106921 100644
--- a/lite/src/mge/network_impl.cpp
+++ b/lite/src/mge/network_impl.cpp
@@ -454,9 +454,8 @@ void NetworkImplDft::set_io(const NetworkIO& network_io) {
 }
 
 void NetworkImplDft::try_infer_tensor_layout(std::shared_ptr<Tensor> tensor, Var var) {
-    auto&& static_infer_mgr = m_load_config.comp_graph->static_infer_manager();
-    auto infer_trait = var.node()->get_static_infer_trait();
-    if (std::get<0>(infer_trait)) {
+    if (var.node()->capable_shape_infer()) {
+        auto&& static_infer_mgr = m_load_config.comp_graph->static_infer_manager();
         auto shape = static_infer_mgr.infer_shape_fallible(var.node());
         if (!shape) {
             LITE_WARN(
diff --git a/lite/test/test_network.cpp b/lite/test/test_network.cpp
index f786b92c..8418daf5 100644
--- a/lite/test/test_network.cpp
+++ b/lite/test/test_network.cpp
@@ -101,6 +101,21 @@ TEST(TestNetWork, GetAllName) {
     ASSERT_TRUE(output_names[0] == "TRUE_DIV(EXP[12065],reduce0[12067])[12077]");
 }
 
+TEST(TestNetWork, LoadFBSModel) {
+    Config config;
+    std::string model_path = "./ax.mge";
+    std::shared_ptr<Network> network = std::make_shared<Network>(config);
+    network->load_model(model_path);
+
+    auto output_tensor = network->get_output_tensor(0);
+    auto out_layout = output_tensor->get_layout();
+    ASSERT_EQ(out_layout.ndim, 4);
+    ASSERT_EQ(out_layout.shapes[0], 1);
+    ASSERT_EQ(out_layout.shapes[1], 1);
+    ASSERT_EQ(out_layout.shapes[2], 40);
+    ASSERT_EQ(out_layout.shapes[3], 180);
+}
+
 TEST(TestNetWork, BasicInplaceAndSingleThreadAffinity) {
     Config config;
     auto lite_tensor = get_input_data("./input_data.npy");
diff --git a/src/core/impl/graph/static_infer_impl.cpp b/src/core/impl/graph/static_infer_impl.cpp
index 04773cf9..5aa84a0e 100644
--- a/src/core/impl/graph/static_infer_impl.cpp
+++ b/src/core/impl/graph/static_infer_impl.cpp
@@ -892,6 +892,16 @@ StaticInferManagerImpl::TagHandler* StaticInferManagerImpl::get_tag_handler_for_
     return c.value;
 }
 
+bool StaticInferManagerImpl::has_shape_infer(Tag tag) const {
+    auto&& c = get_tag_trait_container(tag);
+    return c.shape != nullptr;
+}
+
+bool StaticInferManagerImpl::has_value_infer(Tag tag) const {
+    auto&& c = get_tag_trait_container(tag);
+    return c.value != nullptr;
+}
+
 StaticInferManagerImpl::TagTraitBase* StaticInferManagerImpl::get_tag_trait_for_dep(
         const DepElement& dep) {
     TagHandler* ret;
diff --git a/src/core/impl/graph/static_infer_impl.h b/src/core/impl/graph/static_infer_impl.h
index 572017a0..e7854302 100644
--- a/src/core/impl/graph/static_infer_impl.h
+++ b/src/core/impl/graph/static_infer_impl.h
@@ -66,6 +66,16 @@ public:
     MGE_WIN_DECLSPEC_FUC TagHandler* get_tag_handler_for_value(Tag tag);
 
     /*!
+     * \brief check if there is a registered shape infer func in tag
+     */
+    bool has_shape_infer(Tag tag) const;
+
+    /*!
+     * \brief check if there is a registered value infer func in tag
+     */
+    bool has_value_infer(Tag tag) const;
+
+    /*!
      * \brief clear registered handler for a tag; this is only used in error
      *      handling in opr creation
      */
diff --git a/src/core/impl/graph/var_node.cpp b/src/core/impl/graph/var_node.cpp
index 833da401..a9ceb364 100644
--- a/src/core/impl/graph/var_node.cpp
+++ b/src/core/impl/graph/var_node.cpp
@@ -578,6 +578,18 @@ bool VarNode::is_graph_dest_varnode() {
     return ComputingGraphImpl::downcast(owner_graph())->var_receiver(this).size() == 0;
 }
 
+bool VarNode::capable_shape_infer() {
+    auto&& mgr =
+            ComputingGraphImpl::downcast(owner_graph())->static_infer_manager_impl();
+    return mgr.has_shape_infer(this);
+}
+
+bool VarNode::capable_value_infer() {
+    auto&& mgr =
+            ComputingGraphImpl::downcast(owner_graph())->static_infer_manager_impl();
+    return mgr.has_value_infer(this);
+}
+
 VarNode& VarNode::add_flag(Flag flag) {
     modify_flag(flag, m_flag | flag);
     return *this;
diff --git a/src/core/include/megbrain/graph/var_node.h b/src/core/include/megbrain/graph/var_node.h
index 74db600a..b09b4157 100644
--- a/src/core/include/megbrain/graph/var_node.h
+++ b/src/core/include/megbrain/graph/var_node.h
@@ -495,11 +495,14 @@ public:
             const DeviceTensorND* fixed_alloc = nullptr);
 
     /*!
-     * \brief get the shape and value infer trait
+     * \brief check infer shape capablity by check m_static_infer_trait's shape infer
      */
-    const std::tuple<void*, void*>& get_static_infer_trait() {
-        return m_static_infer_trait;
-    }
+    MGE_WIN_DECLSPEC_FUC bool capable_shape_infer();
+
+    /*!
+     * \brief check infer shape capablity by check m_static_infer_trait's value infer
+     */
+    MGE_WIN_DECLSPEC_FUC bool capable_value_infer();
 
 private:
     //! whether its memory should be allocated by mgb system during graph