diff --git a/mindspore/lite/nnacl/infer/common_infer.h b/mindspore/lite/nnacl/infer/common_infer.h
index e7a32ac8b3..9aedd92b25 100644
--- a/mindspore/lite/nnacl/infer/common_infer.h
+++ b/mindspore/lite/nnacl/infer/common_infer.h
@@ -134,6 +134,7 @@ typedef struct vvector {
 } vvector;
 
 typedef struct TensorListC {
+  bool is_ready_;
   int data_type_;
   int format_;
 
diff --git a/mindspore/lite/nnacl/infer/merge_infer.c b/mindspore/lite/nnacl/infer/merge_infer.c
index 7de9a12cba..4fa2b68fab 100644
--- a/mindspore/lite/nnacl/infer/merge_infer.c
+++ b/mindspore/lite/nnacl/infer/merge_infer.c
@@ -18,36 +18,19 @@
 #include <string.h>
 #include "nnacl/infer/infer_register.h"
 
-int MergeAbleToInfer(const TensorC *const *inputs, size_t inputs_size) {
+bool MergeAbleToInfer(const TensorC *const *inputs, size_t inputs_size) {
   for (size_t i = 0; i < inputs_size; i++) {
-    if (inputs[i]->shape_size_ == 0) {
-      return HasZeroShape;
-    }
-    if (inputs[i]->data_ == NULL) {
-      return NotAble;
+    if (!inputs[i]->is_ready_) {
+      return false;
     }
   }
-  return Able;
+  return true;
 }
 
-int MergeInfer(const TensorC *const *inputs, size_t inputs_size, TensorC **outputs, size_t outputs_size) {
+int MergeInfer(TensorC **inputs, size_t inputs_size, TensorC **outputs, size_t outputs_size) {
   for (size_t i = 0; i < inputs_size; i++) {
-    SetDataTypeFormat(outputs[i], inputs[i]);
-    if (((TensorListC *)inputs[i])->data_type_ == kObjectTypeTensorType) {
-      TensorListC *input_tensorlist = (TensorListC *)inputs[i];
-      TensorListC *output_tensorlist = (TensorListC *)outputs[i];
-      ShapeSet(output_tensorlist->element_shape_, &output_tensorlist->element_shape_size_,
-               input_tensorlist->element_shape_, input_tensorlist->element_shape_size_);
-      output_tensorlist->max_elements_num_ = input_tensorlist->max_elements_num_;
-      output_tensorlist->tensors_data_type_ = input_tensorlist->tensors_data_type_;
-
-      output_tensorlist->element_num_ = input_tensorlist->element_num_;
-      for (size_t j = 0; j < output_tensorlist->element_num_; j++) {
-        memcpy(&output_tensorlist->tensors_[j], &input_tensorlist->tensors_[j], sizeof(TensorC));
-      }
-    } else {
-      SetShapeTensor(outputs[i], inputs[i]);
-    }
+    outputs[i] = inputs[i];
+    inputs[i] = NULL;
   }
   return NNACL_OK;
 }
@@ -55,9 +38,10 @@ int MergeInfer(const TensorC *const *inputs, size_t inputs_size, TensorC **outpu
 int MergeInferShape(const TensorC *const *inputs, size_t inputs_size, TensorC **outputs, size_t outputs_size,
                     OpParameter *parameter) {
 #ifdef Debug
-  int check_ret = CheckAugmentNull(inputs, inputs_size, outputs, outputs_size, parameter);
-  if (check_ret != NNACL_OK) {
-    return check_ret;
+  for (size_t i = 0; i < inputs_size; i++) {
+    if (inputs[i] == NULL) {
+      return NNACL_NULL_PTR;
+    }
   }
   if (inputs_size != 2 * outputs_size) {
     return NNACL_ERR;
@@ -67,12 +51,6 @@ int MergeInferShape(const TensorC *const *inputs, size_t inputs_size, TensorC **
   if (!parameter->infer_flag_) {
     return NNACL_INFER_INVALID;
   }
-  for (size_t i = 0; i < outputs_size; ++i) {
-    outputs[i]->data_type_ = inputs[i]->data_type_;
-  }
-  if (!parameter->infer_flag_) {
-    return NNACL_INFER_INVALID;
-  }
 
   const TensorC *const *left_part_inputs = inputs;
   size_t left_part_inputs_size = inputs_size / 2;
@@ -80,17 +58,12 @@ int MergeInferShape(const TensorC *const *inputs, size_t inputs_size, TensorC **
   const TensorC *const *right_part_inputs = inputs + left_part_inputs_size;
   size_t right_part_inputs_size = inputs_size / 2;
 
-  if (MergeAbleToInfer(left_part_inputs, left_part_inputs_size) == Able) {
-    return MergeInfer(left_part_inputs, left_part_inputs_size, outputs, outputs_size);
-  }
-
-  if (MergeAbleToInfer(right_part_inputs, right_part_inputs_size) == Able) {
-    return MergeInfer(right_part_inputs, right_part_inputs_size, outputs, outputs_size);
+  if (MergeAbleToInfer(left_part_inputs, left_part_inputs_size)) {
+    return MergeInfer((TensorC **)left_part_inputs, left_part_inputs_size, outputs, outputs_size);
   }
 
-  if (MergeAbleToInfer(left_part_inputs, left_part_inputs_size) == HasZeroShape &&
-      MergeAbleToInfer(right_part_inputs, right_part_inputs_size) == HasZeroShape) {
-    return MergeInfer(left_part_inputs, left_part_inputs_size, outputs, outputs_size);
+  if (MergeAbleToInfer(right_part_inputs, right_part_inputs_size)) {
+    return MergeInfer((TensorC **)right_part_inputs, right_part_inputs_size, outputs, outputs_size);
   }
 
   return NNACL_INFER_INVALID;
diff --git a/mindspore/lite/nnacl/infer/merge_infer.h b/mindspore/lite/nnacl/infer/merge_infer.h
index 57b40e07df..1437e5439b 100644
--- a/mindspore/lite/nnacl/infer/merge_infer.h
+++ b/mindspore/lite/nnacl/infer/merge_infer.h
@@ -23,8 +23,6 @@
 extern "C" {
 #endif
 
-enum InferStatus { Able, NotAble, HasZeroShape };
-
 int MergeInferShape(const TensorC *const *inputs, size_t inputs_size, TensorC **outputs, size_t outputs_size,
                     OpParameter *parameter);
 
diff --git a/mindspore/lite/nnacl/tensor_c.h b/mindspore/lite/nnacl/tensor_c.h
index 7a3d44b3da..482bd361f6 100644
--- a/mindspore/lite/nnacl/tensor_c.h
+++ b/mindspore/lite/nnacl/tensor_c.h
@@ -18,6 +18,7 @@
 #include "nnacl/op_base.h"
 
 typedef struct TensorC {
+  bool is_ready_;
   int data_type_;
   int format_;
   void *data_;
diff --git a/mindspore/lite/src/common/tensor_util.cc b/mindspore/lite/src/common/tensor_util.cc
index a20d1cfdfc..a38de8a468 100644
--- a/mindspore/lite/src/common/tensor_util.cc
+++ b/mindspore/lite/src/common/tensor_util.cc
@@ -61,11 +61,13 @@ int OutputTensor2TensorC(const std::vector<lite::Tensor *> &tensors, std::vector
   return RET_OK;
 }
 
-void TensorC2LiteTensor(const std::vector<TensorC *> &tensors_in, std::vector<lite::Tensor *> *tensors_out) {
+void SetOutputTensorAttr(const std::vector<TensorC *> &tensors_in, std::vector<lite::Tensor *> *tensors_out) {
   for (size_t i = 0; i < tensors_in.size(); ++i) {
-    tensors_out->at(i)->set_format(static_cast<schema::Format>(tensors_in[i]->format_));
-    tensors_out->at(i)->set_data_type(static_cast<TypeId>(tensors_in[i]->data_type_));
-    tensors_out->at(i)->set_shape({tensors_in[i]->shape_, tensors_in[i]->shape_ + tensors_in[i]->shape_size_});
+    if (tensors_in[i] != nullptr) {
+      tensors_out->at(i)->set_format(static_cast<schema::Format>(tensors_in[i]->format_));
+      tensors_out->at(i)->set_data_type(static_cast<TypeId>(tensors_in[i]->data_type_));
+      tensors_out->at(i)->set_shape({tensors_in[i]->shape_, tensors_in[i]->shape_ + tensors_in[i]->shape_size_});
+    }
   }
 }
 
@@ -108,6 +110,7 @@ TensorC *NewTensorC() {
 }
 
 void Tensor2TensorC(Tensor *src, TensorC *dst) {
+  dst->is_ready_ = src->IsReady();
   dst->format_ = src->format();
   dst->data_ = src->data_c();
   dst->data_type_ = src->data_type();
@@ -124,6 +127,7 @@ void TensorC2Tensor(TensorC *src, Tensor *dst) {
 }
 
 int TensorList2TensorListC(TensorList *src, TensorListC *dst) {
+  dst->is_ready_ = src->IsReady();
   dst->data_type_ = static_cast<TypeIdC>(src->data_type());
   dst->format_ = src->format();
   dst->element_num_ = src->shape().empty() ? 0 : src->tensors().size();
@@ -165,34 +169,7 @@ int GenerateMergeOutTensorC(const std::vector<lite::Tensor *> &inputs, std::vect
                             std::vector<TensorC *> *out_tensor_c) {
   int ret = RET_OK;
   for (size_t i = 0; i < outputs->size(); i++) {
-    if (inputs.at(i)->data_type() == kObjectTypeTensorType) {
-      auto *output_tensorlist = reinterpret_cast<TensorListC *>(malloc(sizeof(TensorListC)));
-      if (output_tensorlist == nullptr) {
-        return RET_ERROR;
-      }
-      memset(output_tensorlist, 0, sizeof(TensorListC));
-      output_tensorlist->element_num_ = inputs[i]->shape().empty() ? 0 : inputs[i]->shape().at(0);
-      if (output_tensorlist->element_num_ != 0) {
-        output_tensorlist->tensors_ =
-          reinterpret_cast<TensorC *>(malloc(output_tensorlist->element_num_ * sizeof(TensorC)));
-        if (output_tensorlist->tensors_ == nullptr) {
-          free(output_tensorlist);
-          output_tensorlist = nullptr;
-          return RET_ERROR;
-        }
-        memset(output_tensorlist->tensors_, 0, output_tensorlist->element_num_ * sizeof(TensorC));
-      }
-
-      out_tensor_c->push_back(reinterpret_cast<TensorC *const>(output_tensorlist));
-    } else {
-      auto *output_tensor = NewTensorC();
-      if (output_tensor == nullptr) {
-        MS_LOG(ERROR) << "malloc tensor_c failed";
-        ret = RET_ERROR;
-        break;
-      }
-      out_tensor_c->push_back(reinterpret_cast<TensorC *const>(output_tensor));
-    }
+    out_tensor_c->push_back(nullptr);
   }
   return ret;
 }
diff --git a/mindspore/lite/src/common/tensor_util.h b/mindspore/lite/src/common/tensor_util.h
index 6fdce47445..58bb8e7f4e 100644
--- a/mindspore/lite/src/common/tensor_util.h
+++ b/mindspore/lite/src/common/tensor_util.h
@@ -26,7 +26,7 @@ namespace mindspore {
 namespace lite {
 int InputTensor2TensorC(const std::vector<lite::Tensor *> &tensors_in, std::vector<TensorC *> *tensors_out);
 int OutputTensor2TensorC(const std::vector<lite::Tensor *> &tensors_in, std::vector<TensorC *> *tensors_out);
-void TensorC2LiteTensor(const std::vector<TensorC *> &tensors_in, std::vector<lite::Tensor *> *tensors_out);
+void SetOutputTensorAttr(const std::vector<TensorC *> &tensors_in, std::vector<lite::Tensor *> *tensors_out);
 void FreeAllTensorC(std::vector<TensorC *> *tensors_in);
 void FreeTensorListC(TensorListC *tensorListC);
 TensorC *NewTensorC();
diff --git a/mindspore/lite/src/kernel_registry.cc b/mindspore/lite/src/kernel_registry.cc
index 063daa9bd0..4a37ed2ddc 100644
--- a/mindspore/lite/src/kernel_registry.cc
+++ b/mindspore/lite/src/kernel_registry.cc
@@ -64,7 +64,7 @@ int KernelRegistry::Init() {
 
 kernel::KernelCreator KernelRegistry::GetCreator(const KernelKey &desc) {
   int index = GetCreatorFuncIndex(desc);
-  if (index >= array_size_) {
+  if (index >= array_size_ || index < 0) {
     MS_LOG(ERROR) << "invalid kernel key, arch " << desc.arch << ", data_type" << desc.data_type << ",op type "
                   << desc.type;
     return nullptr;
diff --git a/mindspore/lite/src/runtime/infer_manager.cc b/mindspore/lite/src/runtime/infer_manager.cc
index ac97b1bcff..c3b69fdc10 100644
--- a/mindspore/lite/src/runtime/infer_manager.cc
+++ b/mindspore/lite/src/runtime/infer_manager.cc
@@ -66,7 +66,7 @@ int KernelInferShape(const std::vector<lite::Tensor *> &inputs, std::vector<lite
       }
     }
   } else {
-    TensorC2LiteTensor(out_tensors, outputs);
+    SetOutputTensorAttr(out_tensors, outputs);
   }
 
   FreeAllTensorC(&in_tensors);