diff --git a/mace/kernels/strided_slice.h b/mace/kernels/strided_slice.h
index 9486e2fdbfd8d620eba743220838875c3a077234..efdd9141663eea93bd0ac554118858541631b8fa 100644
--- a/mace/kernels/strided_slice.h
+++ b/mace/kernels/strided_slice.h
@@ -32,12 +32,16 @@ struct StridedSliceFunctor {
                       int end_mask,
                       int ellipsis_mask,
                       int new_axis_mask,
-                      int shrink_axis_mask)
+                      int shrink_axis_mask,
+                      bool is_slice = false)
       : begin_mask_(begin_mask),
         end_mask_(end_mask),
         ellipsis_mask_(ellipsis_mask),
         new_axis_mask_(new_axis_mask),
-        shrink_axis_mask_(shrink_axis_mask) {}
+        shrink_axis_mask_(shrink_axis_mask),
+        is_slice_(is_slice),
+        tmp_strides_tensor_(GetDeviceAllocator(D),
+                            DataTypeToEnum<int32_t>::v()) {}
 
   MaceStatus operator()(const Tensor *input,
                         const Tensor *begin_indices,
@@ -49,6 +53,14 @@ struct StridedSliceFunctor {
     MACE_CHECK(ellipsis_mask_ == 0 && new_axis_mask_ == 0,
                "ellipsis_mask and new_axis_mask are not supported yet.");
 
+    if (strides == nullptr) {
+      tmp_strides_tensor_.Resize({begin_indices->size()});
+      Tensor::MappingGuard strides_guard(&tmp_strides_tensor_);
+      int32_t *strides_data = tmp_strides_tensor_.mutable_data<int32_t>();
+      std::fill(strides_data, strides_data + tmp_strides_tensor_.size(), 1);
+      strides = &tmp_strides_tensor_;
+    }
+
     Tensor::MappingGuard input_guard(input);
     Tensor::MappingGuard begin_indices_guard(begin_indices);
     Tensor::MappingGuard end_indices_guard(end_indices);
@@ -56,6 +68,19 @@ struct StridedSliceFunctor {
     const T *input_data = input->data<T>();
     const int32_t *begin_indices_data = begin_indices->data<int32_t>();
     const int32_t *end_indices_data = end_indices->data<int32_t>();
+    std::vector<int32_t> slice_end_data;
+    if (is_slice_) {
+      // if this op is slice, the end_indices_data is size actually
+      slice_end_data.resize(end_indices->size());
+      for (int i = 0; i < slice_end_data.size(); ++i) {
+        if (end_indices_data[i] == -1) {
+          slice_end_data[i] = input->dim(i);
+        } else {
+          slice_end_data[i] = begin_indices_data[i] + end_indices_data[i];
+        }
+      }
+      end_indices_data = slice_end_data.data();
+    }
     const int32_t *strides_data = strides->data<int32_t>();
 
     std::vector<index_t> output_shape;
@@ -152,6 +177,8 @@ struct StridedSliceFunctor {
   int ellipsis_mask_;
   int new_axis_mask_;
   int shrink_axis_mask_;
+  bool is_slice_;
+  Tensor tmp_strides_tensor_;
 };
 
 }  // namespace kernels
diff --git a/mace/ops/strided_slice.h b/mace/ops/strided_slice.h
index e3e25db543f32e3b3361422a762159d50aeec69e..57653359c2b0d4333ed8e04517c699e60b7439b3 100644
--- a/mace/ops/strided_slice.h
+++ b/mace/ops/strided_slice.h
@@ -30,13 +30,18 @@ class StridedSliceOp : public Operator<D, T> {
                  OperatorBase::GetOptionalArg<int>("end_mask", 0),
                  OperatorBase::GetOptionalArg<int>("ellipsis_mask", 0),
                  OperatorBase::GetOptionalArg<int>("new_axis_mask", 0),
-                 OperatorBase::GetOptionalArg<int>("shrink_axis_mask", 0)) {}
+                 OperatorBase::GetOptionalArg<int>("shrink_axis_mask", 0),
+                 OperatorBase::GetOptionalArg<bool>("slice",
+                                                    false)) {}
 
   MaceStatus Run(StatsFuture *future) override {
     const Tensor *input = this->Input(INPUT);
     const Tensor *begin_indices = this->Input(BEGIN);
     const Tensor *end_indices = this->Input(END);
-    const Tensor *strides = this->Input(STRIDES);
+    const Tensor *strides = nullptr;
+    if (this->InputSize() > 3) {
+      strides = this->Input(STRIDES);
+    }
     Tensor *output = this->Output(OUTPUT);
 
     return functor_(input, begin_indices, end_indices, strides, output, future);
diff --git a/mace/ops/strided_slice_test.cc b/mace/ops/strided_slice_test.cc
index 6cd46f4e110e0cb001932a18db6db2a5c69d866b..8662367eddc775a2142878430c39cc93c364ba15 100644
--- a/mace/ops/strided_slice_test.cc
+++ b/mace/ops/strided_slice_test.cc
@@ -23,32 +23,27 @@ class StridedSliceOpTest : public OpsTestBase {};
 
 namespace {
 
-void TestSlice(const std::vector<index_t> &input_shape,
-               const std::vector<float> &input,
-               const std::vector<int32_t> &begin_indices,
-               const std::vector<int32_t> &end_indices,
-               const std::vector<int32_t> &strides,
-               const int begin_mask,
-               const int end_mask,
-               const int ellipsis_mask,
-               const int new_axis_mask,
-               const int shrink_axis_mask,
-               const std::vector<index_t> &output_shape,
-               const std::vector<float> &output) {
+void TestStridedSlice(const std::vector<index_t> &input_shape,
+                      const std::vector<float> &input,
+                      const std::vector<int32_t> &begin_indices,
+                      const std::vector<int32_t> &end_indices,
+                      const std::vector<int32_t> &strides,
+                      const int begin_mask,
+                      const int end_mask,
+                      const int ellipsis_mask,
+                      const int new_axis_mask,
+                      const int shrink_axis_mask,
+                      const std::vector<index_t> &output_shape,
+                      const std::vector<float> &output) {
   OpsTestNet net;
   net.AddInputFromArray<CPU, float>("Input", input_shape, input);
-  net.AddInputFromArray<CPU, int32_t>("BeginIndices",
-                                      {static_cast<int32_t>(
-                                           input_shape.size())},
-                                      begin_indices);
-  net.AddInputFromArray<CPU, int32_t>("EndIndices",
-                                      {static_cast<int32_t>(
-                                           input_shape.size())},
-                                      end_indices);
-  net.AddInputFromArray<CPU, int32_t>("Strides",
-                                      {static_cast<int32_t>(
-                                           input_shape.size())},
-                                      strides);
+  net.AddInputFromArray<CPU, int32_t>(
+      "BeginIndices", {static_cast<int32_t>(input_shape.size())},
+      begin_indices);
+  net.AddInputFromArray<CPU, int32_t>(
+      "EndIndices", {static_cast<int32_t>(input_shape.size())}, end_indices);
+  net.AddInputFromArray<CPU, int32_t>(
+      "Strides", {static_cast<int32_t>(input_shape.size())}, strides);
 
   OpDefBuilder("StridedSlice", "StridedSliceOpTest")
       .Input("Input")
@@ -70,47 +65,92 @@ void TestSlice(const std::vector<index_t> &input_shape,
                           *net.GetOutput("Output"));
 }
 
+void TestSlice(const std::vector<index_t> &input_shape,
+               const std::vector<float> &input,
+               const std::vector<int32_t> &begin_indices,
+               const std::vector<int32_t> &indices_size,
+               const std::vector<index_t> &output_shape,
+               const std::vector<float> &output) {
+  OpsTestNet net;
+  net.AddInputFromArray<CPU, float>("Input", input_shape, input);
+  net.AddInputFromArray<CPU, int32_t>(
+      "BeginIndices", {static_cast<int32_t>(input_shape.size())},
+      begin_indices);
+  net.AddInputFromArray<CPU, int32_t>(
+      "IndicesSize", {static_cast<int32_t>(indices_size.size())}, indices_size);
+
+  OpDefBuilder("StridedSlice", "StridedSliceOpTest")
+      .Input("Input")
+      .Input("BeginIndices")
+      .Input("IndicesSize")
+      .Output("Output")
+      .AddIntArg("slice", 1)
+      .Finalize(net.NewOperatorDef());
+
+  net.RunOp();
+  net.AddInputFromArray<CPU, float>("ExpectedOutput", output_shape, output);
+  ExpectTensorNear<float>(*net.GetOutput("ExpectedOutput"),
+                          *net.GetOutput("Output"));
+}
+
 }  // namespace
 
-TEST_F(StridedSliceOpTest, TestSliceByFirstAxis) {
-  TestSlice({2, 3, 2}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}, {1, 0, 0},
-            {2, 3, 2}, {1, 1, 1}, 0, 0, 0, 0, 0, {1, 3, 2},
-            {7, 8, 9, 10, 11, 12});
-  TestSlice({2, 3, 2}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}, {1, 0, 0},
-            {2, 3, 2}, {1, 1, 1}, 0, 0, 0, 0, 1, {3, 2}, {7, 8, 9, 10, 11, 12});
-  TestSlice({2, 3, 2}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}, {1, 1, 2},
-            {2, 3, 2}, {1, 1, 1}, 6, 6, 0, 0, 0, {1, 3, 2},
-            {7, 8, 9, 10, 11, 12});
+TEST_F(StridedSliceOpTest, TestStridedSliceByFirstAxis) {
+  TestStridedSlice({2, 3, 2}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
+                   {1, 0, 0}, {2, 3, 2}, {1, 1, 1}, 0, 0, 0, 0, 0, {1, 3, 2},
+                   {7, 8, 9, 10, 11, 12});
+  TestStridedSlice({2, 3, 2}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
+                   {1, 0, 0}, {2, 3, 2}, {1, 1, 1}, 0, 0, 0, 0, 1, {3, 2},
+                   {7, 8, 9, 10, 11, 12});
+  TestStridedSlice({2, 3, 2}, {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12},
+                   {1, 1, 2}, {2, 3, 2}, {1, 1, 1}, 6, 6, 0, 0, 0, {1, 3, 2},
+                   {7, 8, 9, 10, 11, 12});
+}
+
+TEST_F(StridedSliceOpTest, TestStridedSliceRank1) {
+  TestStridedSlice({4}, {1, 2, 3, 4}, {1}, {3}, {1}, 0, 0, 0, 0, 0, {2},
+                   {2, 3});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {-3}, {3}, {1}, 0, 0, 0, 0, 0, {2},
+                   {2, 3});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 0, 0, 0, 0, 0, {2},
+                   {3, 2});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {-1}, {-4}, {-2}, 0, 0, 0, 0, 0, {2},
+                   {4, 2});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 1, 0, 0, 0, 0, {3},
+                   {4, 3, 2});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 0, 1, 0, 0, 0, {3},
+                   {3, 2, 1});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 1, 1, 0, 0, 0, {4},
+                   {4, 3, 2, 1});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {2}, {4}, {2}, 1, 1, 0, 0, 0, {2},
+                   {1, 3});
+  TestStridedSlice({4}, {1, 2, 3, 4}, {2}, {3}, {1}, 0, 0, 0, 0, 1, {}, {3});
 }
 
-TEST_F(StridedSliceOpTest, TestSliceRank1) {
-  TestSlice({4}, {1, 2, 3, 4}, {1}, {3}, {1}, 0, 0, 0, 0, 0, {2}, {2, 3});
-  TestSlice({4}, {1, 2, 3, 4}, {-3}, {3}, {1}, 0, 0, 0, 0, 0, {2}, {2, 3});
-  TestSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 0, 0, 0, 0, 0, {2}, {3, 2});
-  TestSlice({4}, {1, 2, 3, 4}, {-1}, {-4}, {-2}, 0, 0, 0, 0, 0, {2}, {4, 2});
-  TestSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 1, 0, 0, 0, 0, {3}, {4, 3, 2});
-  TestSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 0, 1, 0, 0, 0, {3}, {3, 2, 1});
-  TestSlice({4}, {1, 2, 3, 4}, {-2}, {-4}, {-1}, 1, 1, 0, 0, 0, {4},
-            {4, 3, 2, 1});
-  TestSlice({4}, {1, 2, 3, 4}, {2}, {4}, {2}, 1, 1, 0, 0, 0, {2}, {1, 3});
-  TestSlice({4}, {1, 2, 3, 4}, {2}, {3}, {1}, 0, 0, 0, 0, 1, {}, {3});
+TEST_F(StridedSliceOpTest, TestStridedSliceRank2) {
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 0}, {2, 3}, {1, 1}, 0, 0, 0,
+                   0, 0, {2, 3}, {1, 2, 3, 4, 5, 6});
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 1}, {2, 3}, {1, 1}, 0, 0, 0,
+                   0, 0, {1, 2}, {5, 6});
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 0}, {2, 3}, {1, 2}, 0, 0, 0,
+                   0, 0, {2, 2}, {1, 3, 4, 6});
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 2}, {0, 0}, {-1, -1}, 0, 0,
+                   0, 0, 0, {1, 2}, {6, 5});
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 2}, {0, 0}, {-1, -1}, 3, 3,
+                   0, 0, 0, {2, 3}, {6, 5, 4, 3, 2, 1});
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 0}, {2, 3}, {1, 1}, 0, 0, 0,
+                   0, 1, {3}, {4, 5, 6});
+  TestStridedSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 2}, {2, 3}, {1, 1}, 0, 0, 0,
+                   0, 3, {}, {6});
 }
 
-TEST_F(StridedSliceOpTest, TestSliceRank2) {
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 0}, {2, 3}, {1, 1}, 0, 0, 0, 0, 0,
-            {2, 3}, {1, 2, 3, 4, 5, 6});
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 1}, {2, 3}, {1, 1}, 0, 0, 0, 0, 0,
-            {1, 2}, {5, 6});
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 0}, {2, 3}, {1, 2}, 0, 0, 0, 0, 0,
-            {2, 2}, {1, 3, 4, 6});
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 2}, {0, 0}, {-1, -1}, 0, 0, 0, 0, 0,
-            {1, 2}, {6, 5});
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 2}, {0, 0}, {-1, -1}, 3, 3, 0, 0, 0,
-            {2, 3}, {6, 5, 4, 3, 2, 1});
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 0}, {2, 3}, {1, 1}, 0, 0, 0, 0, 1,
-            {3}, {4, 5, 6});
-  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 2}, {2, 3}, {1, 1}, 0, 0, 0, 0, 3,
-            {}, {6});
+TEST_F(StridedSliceOpTest, TestSlice) {
+  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 0}, {2, 3}, {2, 3},
+            {1, 2, 3, 4, 5, 6});
+  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {1, 0}, {1, 2}, {1, 2}, {4, 5});
+  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 0}, {2, -1}, {2, 3},
+            {1, 2, 3, 4, 5, 6});
+  TestSlice({2, 3}, {1, 2, 3, 4, 5, 6}, {0, 1}, {2, -1}, {2, 2}, {2, 3, 5, 6});
 }
 
 }  // namespace test
diff --git a/mace/python/tools/converter_tool/transformer.py b/mace/python/tools/converter_tool/transformer.py
index 8c8987bf9d758944dcf8f2656672a969dd9558ac..02207cf1afe70341f2ba1bf76b0c28b2e5e2f80e 100644
--- a/mace/python/tools/converter_tool/transformer.py
+++ b/mace/python/tools/converter_tool/transformer.py
@@ -1155,5 +1155,6 @@ class Transformer(base_converter.ConverterInterface):
 
         print("Final ops:")
         for op in net.op:
-            print("%s (%s)" % (op.name, op.type))
+            print("%s (%s): %s" % (op.name, op.type, [
+                out_shape.dims for out_shape in op.output_shape]))
         return False