diff --git a/lite/operators/op_params.h b/lite/operators/op_params.h
index 1e221a602a426f3f117c69b9525f2a1d85880ee0..3fdca389bca1ba09ebfe008365b6992b717270d8 100644
--- a/lite/operators/op_params.h
+++ b/lite/operators/op_params.h
@@ -158,6 +158,21 @@ struct MulParam : ParamBase {
   int y_num_col_dims{1};
   // for int8
   WITH_INT8_CONFIG
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x, y}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 struct MulGradParam : ParamBase {
@@ -226,6 +241,21 @@ struct ScaleParam : ParamBase {
   float scale{1.};
   float bias{};
   bool bias_after_scale{true};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 // For Softmax op
@@ -260,6 +290,21 @@ struct ReshapeParam : ParamBase {
 
   lite::Tensor* xshape{};
   bool inplace{false};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 // For Concat op
@@ -268,6 +313,24 @@ struct ConcatParam : ParamBase {
   lite::Tensor* output{};
   int axis{0};
   lite::Tensor* axis_tensor{};
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      std::vector<const Tensor*> vec;
+      for (auto in : x) {
+        vec.push_back(in);
+      }
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>(vec));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 /// ----------------------- activation operators ----------------------
@@ -370,6 +433,21 @@ struct BatchNormParam : ParamBase {
   float epsilon;
   float momentum;
   DataLayoutType data_layout{DATALAYOUT(kNCHW)};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({y}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 // For Pooling op
@@ -394,6 +472,21 @@ struct PoolParam : ParamBase {
   std::string data_format{"AnyLayout"};
   // for int8
   WITH_INT8_CONFIG
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 // For Dropout op
@@ -418,6 +511,21 @@ struct SplitParam : ParamBase {
   int axis{-1};
   int num{0};
   std::vector<int> sections;
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 // For Transpose op
@@ -429,6 +537,21 @@ struct TransposeParam : ParamBase {
   std::vector<int> axis;
   bool use_mkldnn{false};
   std::string data_format{"AnyLayout"};
+  ///////////////////////////////////////////////////////////////////////////////////
+  //  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({x}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({output}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 /// ----------------------- element wise operators ----------------------
@@ -754,6 +877,21 @@ struct Im2SequenceParam : ParamBase {
 struct SequenceSoftmaxParam : ParamBase {
   const lite::Tensor* X{};
   lite::Tensor* Out{};
+  ///////////////////////////////////////////////////////////////////////////////////
+  //  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({X}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({Out}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 struct NormParam : ParamBase {
@@ -984,6 +1122,21 @@ struct SliceParam : ParamBase {
   std::vector<lite::Tensor*> EndsTensorList{};
   lite::Tensor* StartsTensor{nullptr};
   lite::Tensor* EndsTensor{nullptr};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({X}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({Out}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 struct AffineChannelParam : ParamBase {
@@ -1031,6 +1184,21 @@ struct SqueezeParam : ParamBase {
   lite::Tensor* Out{};
   lite::Tensor* XShape{};
   std::vector<int> axes{};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({X}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({Out}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 struct UnsqueezeParam : ParamBase {
@@ -1040,6 +1208,21 @@ struct UnsqueezeParam : ParamBase {
   std::vector<int> axes{};
   const lite::Tensor* axes_tensor{};
   std::vector<const lite::Tensor*> axes_tensor_vct{};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({X}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({Out}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 /// ----------------------- expand operators ----------------------
@@ -1057,6 +1240,21 @@ struct MatMulParam : ParamBase {
   bool transpose_X{false};
   bool transpose_Y{false};
   float alpha{1.0f};
+  ///////////////////////////////////////////////////////////////////////////////////
+  // get a vector of input tensors
+  const std::vector<const Tensor*>* input_tensor_ptrs() {
+    if (UNLIKELY(input_tensor_ptrs_cache_)) {
+      input_tensor_ptrs_cache_.reset(new std::vector<const Tensor*>({X, Y}));
+    }
+    return input_tensor_ptrs_cache_.get();
+  }
+  // get a vector of output tensors
+  const std::vector<Tensor*>* output_tensor_ptrs() {
+    if (UNLIKELY(output_tensor_ptrs_cache_)) {
+      output_tensor_ptrs_cache_.reset(new std::vector<lite::Tensor*>({Out}));
+    }
+    return output_tensor_ptrs_cache_.get();
+  }
 };
 
 struct GatherParam : ParamBase {