diff --git a/lite/kernels/x86/CMakeLists.txt b/lite/kernels/x86/CMakeLists.txt
index 423fa5355288fcfa0f2cc50f3930cb6e5f013b8d..b774d63b3c513bbe2912b31195022925a574e21a 100644
--- a/lite/kernels/x86/CMakeLists.txt
+++ b/lite/kernels/x86/CMakeLists.txt
@@ -34,6 +34,7 @@ add_kernel(mul_compute_x86 X86 basic SRCS mul_compute.cc DEPS ${lite_kernel_deps
 add_kernel(concat_compute_x86 X86 basic SRCS concat_compute.cc DEPS ${lite_kernel_deps})
 add_kernel(shape_compute_x86 X86 basic SRCS shape_compute.cc DEPS ${lite_kernel_deps})
 add_kernel(sequence_pool_compute_x86 X86 basic SRCS sequence_pool_compute.cc DEPS ${lite_kernel_deps} sequence_pooling)
+add_kernel(search_group_padding_compute_x86 X86 extra SRCS search_group_padding_compute.cc DEPS ${lite_kernel_deps})
 add_kernel(sequence_reverse_compute_x86 X86 basic SRCS sequence_reverse_compute.cc DEPS ${lite_kernel_deps})
 add_kernel(softmax_compute_x86 X86 basic SRCS softmax_compute.cc DEPS ${lite_kernel_deps} softmax)
 add_kernel(elementwise_compute_x86 X86 basic SRCS elementwise_compute.cc DEPS ${lite_kernel_deps})
@@ -71,6 +72,7 @@ lite_cc_test(test_batch_norm_compute_x86 SRCS batch_norm_compute_test.cc DEPS ba
 lite_cc_test(test_softmax_compute_x86 SRCS softmax_compute_test.cc DEPS softmax_compute_x86)
 lite_cc_test(test_elementwise_compute_x86 SRCS elementwise_compute_test.cc DEPS elementwise_compute_x86)
 lite_cc_test(test_relu_compute_x86 SRCS relu_compute_test.cc DEPS activation_compute_x86)
+lite_cc_test(test_search_group_padding_compute_x86 SRCS search_group_padding_compute_test.cc DEPS search_group_padding_compute_x86)
 lite_cc_test(test_tanh_compute_x86 SRCS tanh_compute_test.cc DEPS activation_compute_x86)
 lite_cc_test(test_gelu_compute_x86 SRCS gelu_compute_test.cc DEPS activation_compute_x86)
 lite_cc_test(test_sequence_expand_as_compute_x86 SRCS sequence_expand_as_compute_test.cc DEPS sequence_expand_as_compute_x86)
diff --git a/lite/kernels/x86/search_group_padding_compute.cc b/lite/kernels/x86/search_group_padding_compute.cc
new file mode 100644
index 0000000000000000000000000000000000000000..d1847ac9dbafc533b8720ab65e6fa1915d5a136e
--- /dev/null
+++ b/lite/kernels/x86/search_group_padding_compute.cc
@@ -0,0 +1,28 @@
+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "lite/kernels/x86/search_group_padding_compute.h"
+
+REGISTER_LITE_KERNEL(
+    search_group_padding,
+    kX86,
+    kFloat,
+    kNCHW,
+    paddle::lite::kernels::x86::SearchGroupPaddingCompute<float>,
+    def)
+    .BindInput("X", {LiteType::GetTensorTy(TARGET(kX86))})
+    .BindOutput("Out_emb_padding", {LiteType::GetTensorTy(TARGET(kX86))})
+    .BindOutput("Out_new", {LiteType::GetTensorTy(TARGET(kX86))})
+    .BindOutput("Out_padding", {LiteType::GetTensorTy(TARGET(kX86))})
+    .Finalize();
diff --git a/lite/kernels/x86/search_group_padding_compute.h b/lite/kernels/x86/search_group_padding_compute.h
new file mode 100644
index 0000000000000000000000000000000000000000..17244d15d9124d9d61d1f4fdef4f12590958c0be
--- /dev/null
+++ b/lite/kernels/x86/search_group_padding_compute.h
@@ -0,0 +1,105 @@
+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#pragma once
+
+#include <vector>
+#include "lite/core/kernel.h"
+#include "lite/core/op_registry.h"
+
+namespace paddle {
+namespace lite {
+namespace kernels {
+namespace x86 {
+
+template <typename T>
+class SearchGroupPaddingCompute
+    : public KernelLite<TARGET(kX86), PRECISION(kFloat)> {
+ public:
+  using param_t = operators::SearchGroupPaddingParam;
+
+  void Run() override {
+    auto& param = *param_.get_mutable<operators::SearchGroupPaddingParam>();
+
+    auto* bottom0 = param.x;
+    auto* top0 = param.out_emb_padding;
+    auto* top1 = param.out_new;
+    auto* top2 = param.out_padding;
+
+    int _pad_id = param.pad_id;
+
+    int batch = bottom0->lod()[0].size() - 1;
+    int dim0 = bottom0->dims()[0];
+    int dim1 = bottom0->dims()[1];
+
+    const auto offset = bottom0->lod()[0];
+    int max_seq = 0;
+    for (int i = 0; i < batch; ++i) {
+      if (offset[i + 1] - offset[i] > max_seq) {
+        max_seq = offset[i + 1] - offset[i];
+      }
+    }
+
+    std::vector<size_t> new_offset;
+    new_offset.resize(batch + 1);
+    for (int i = 0; i < batch + 1; ++i) {
+      new_offset[i] = i * max_seq;
+    }
+
+    // for padding data
+    lite::LoD top0_lod;
+    top0_lod.push_back(new_offset);
+    top0->set_lod(top0_lod);
+    top0->Resize({batch * max_seq, dim1});
+    // for origin input id
+    // already set by ShareLoD in InferShape
+    lite::LoD top1_lod;
+    top1_lod.push_back(offset);
+    top1->set_lod(top1_lod);
+    top1->Resize({dim0, 1});
+    memset(top1->mutable_data<T>(),
+           0,
+           top1->dims()[0] * top1->dims()[1] * sizeof(T));
+    // for padding input id
+    lite::LoD top2_lod;
+    top2_lod.push_back(new_offset);
+    top2->set_lod(top2_lod);
+    top2->Resize({batch * max_seq, 1});
+    // copy data
+    const auto* bottom_data = bottom0->data<T>();
+    auto* top_data = top0->mutable_data<T>();
+    auto* top_padding_input_data = top2->mutable_data<T>();
+    for (int i = 0; i < batch; i++) {
+      const int copy_step = offset[i + 1] - offset[i];
+      const int start = i * max_seq;
+      memcpy(top_data + start * dim1,
+             bottom_data + offset[i] * dim1,
+             copy_step * dim1 * sizeof(T));
+      memset(top_data + (start + copy_step) * dim1,
+             0,
+             (max_seq - copy_step) * dim1 * sizeof(T));
+      // for padding input id
+      memset(top_padding_input_data + start, 0, copy_step * sizeof(T));
+      for (int j = start + copy_step; j < start + max_seq; j++) {
+        top_padding_input_data[j] = static_cast<T>(_pad_id);
+      }
+    }
+  }
+
+  virtual ~SearchGroupPaddingCompute() = default;
+};
+
+}  // namespace x86
+}  // namespace kernels
+}  // namespace lite
+}  // namespace paddle
diff --git a/lite/kernels/x86/search_group_padding_compute_test.cc b/lite/kernels/x86/search_group_padding_compute_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f4c36c2a63488a6bb902a2b8b4ad81fa32b37672
--- /dev/null
+++ b/lite/kernels/x86/search_group_padding_compute_test.cc
@@ -0,0 +1,92 @@
+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "lite/kernels/x86/search_group_padding_compute.h"
+#include <gtest/gtest.h>
+#include <memory>
+#include <utility>
+#include <vector>
+#include "lite/core/op_registry.h"
+
+namespace paddle {
+namespace lite {
+namespace kernels {
+namespace x86 {
+
+TEST(search_group_padding_x86, retrieve_op) {
+  auto search_group_padding =
+      KernelRegistry::Global().Create<TARGET(kX86), PRECISION(kFloat)>(
+          "search_group_padding");
+  ASSERT_FALSE(search_group_padding.empty());
+  ASSERT_TRUE(search_group_padding.front());
+}
+
+TEST(search_group_padding_x86, init) {
+  SearchGroupPaddingCompute<float> search_group_padding;
+  ASSERT_EQ(search_group_padding.precision(), PRECISION(kFloat));
+  ASSERT_EQ(search_group_padding.target(), TARGET(kX86));
+}
+
+TEST(search_group_padding_x86, run_test) {
+  lite::Tensor x, out_emb_padding, out_new, out_padding;
+  x.Resize({2, 3});
+  out_emb_padding.Resize({-1, 3});
+  out_new.Resize({2, 1});
+  out_padding.Resize({-1, 1});
+  LoD x_lod{};
+  x_lod.push_back({0, 1});
+  x.set_lod(x_lod);
+
+  auto* x_data = x.mutable_data<float>();
+  for (int64_t i = 0; i < x.dims().production(); i++) {
+    x_data[i] = static_cast<float>(i);
+  }
+  SearchGroupPaddingCompute<float> sgp_kernel;
+  operators::SearchGroupPaddingParam param;
+
+  std::unique_ptr<KernelContext> ctx(new KernelContext);
+  ctx->As<X86Context>();
+  sgp_kernel.SetContext(std::move(ctx));
+
+  param.x = &x;
+  param.out_emb_padding = &out_emb_padding;
+  param.out_new = &out_new;
+  param.out_padding = &out_padding;
+
+  sgp_kernel.SetParam(param);
+  sgp_kernel.Run();
+
+  std::vector<float> out_emb_padding_ref = {0, 1, 2};
+  std::vector<float> out_new_ref = {0, 0};
+  std::vector<float> out_padding_ref = {0};
+  auto* out_emb_padding_data = out_emb_padding.mutable_data<float>();
+  auto* out_new_data = out_new.mutable_data<float>();
+  auto* out_padding_data = out_padding.mutable_data<float>();
+  for (int i = 0; i < out_emb_padding.dims().production(); i++) {
+    EXPECT_NEAR(out_emb_padding_data[i], out_emb_padding_ref[i], 1e-5);
+  }
+  for (int i = 0; i < out_new.dims().production(); i++) {
+    EXPECT_NEAR(out_new_data[i], out_new_ref[i], 1e-5);
+  }
+  for (int i = 0; i < out_padding.dims().production(); i++) {
+    EXPECT_NEAR(out_padding_data[i], out_padding_ref[i], 1e-5);
+  }
+}
+
+}  // namespace x86
+}  // namespace kernels
+}  // namespace lite
+}  // namespace paddle
+
+USE_LITE_KERNEL(search_group_padding, kX86, kFloat, kNCHW, def);
diff --git a/lite/operators/CMakeLists.txt b/lite/operators/CMakeLists.txt
index bc48f853c6f7bc523faf431089ceebe0b1044301..19d6871921d10d26b0a1c001abeda19308fc869e 100644
--- a/lite/operators/CMakeLists.txt
+++ b/lite/operators/CMakeLists.txt
@@ -7,6 +7,7 @@ add_operator(pool_op basic SRCS pool_op.cc DEPS ${op_DEPS})
 add_operator(fc_op basic SRCS fc_op.cc DEPS ${op_DEPS})
 add_operator(assign_op extra SRCS assign_op.cc DEPS ${op_DEPS})
 add_operator(relu_op basic SRCS relu_op.cc DEPS ${op_DEPS})
+add_operator(search_group_padding extra SRCS search_group_padding_op.cc DEPS ${op_DEPS})
 add_operator(mul_op basic SRCS mul_op.cc DEPS ${op_DEPS})
 add_operator(matmul_op basic SRCS matmul_op.cc DEPS ${op_DEPS})
 add_operator(scale_op basic SRCS scale_op.cc DEPS ${op_DEPS})
diff --git a/lite/operators/op_params.h b/lite/operators/op_params.h
index a3f9e45048ad0a01c9429c163bf38da876dd5f42..f4373ad8d851270c8e83690113b8d40d0b5e0433 100644
--- a/lite/operators/op_params.h
+++ b/lite/operators/op_params.h
@@ -740,6 +740,14 @@ struct SequencePoolParam {
 #endif
 };
 
+struct SearchGroupPaddingParam {
+  lite::Tensor* x{};
+  lite::Tensor* out_emb_padding{};
+  lite::Tensor* out_new{};
+  lite::Tensor* out_padding{};
+  int pad_id;
+};
+
 struct SequenceReshapeParam {
   lite::Tensor* x{};
   lite::Tensor* output{};
diff --git a/lite/operators/search_group_padding_op.cc b/lite/operators/search_group_padding_op.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2556468100bc75add8ab75b422371602283157a8
--- /dev/null
+++ b/lite/operators/search_group_padding_op.cc
@@ -0,0 +1,67 @@
+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "lite/operators/search_group_padding_op.h"
+#include "lite/core/op_registry.h"
+
+namespace paddle {
+namespace lite {
+namespace operators {
+
+bool SearchGroupPaddingOp::CheckShape() const {
+  CHECK_EQ(param_.x->dims().size(), 2) << "The rank of X(Input) should be 2.";
+  CHECK_EQ(param_.x->lod().empty(), false)
+      << "Input Tensor of X does not contain LoD information.";
+  CHECK_GE(param_.x->lod()[0].size(), 2)
+      << "The Input(X)'s lod info is corrupted.";
+  CHECK_EQ(param_.x->dims()[0], static_cast<int64_t>(param_.x->lod()[0].back()))
+      << "The Input(X)'s lod info mismatches the actual tensor shape.";
+
+  return true;
+}
+
+bool SearchGroupPaddingOp::InferShape() const {
+  std::vector<int64_t> x_dims = param_.x->dims().Vectorize();
+
+  param_.out_emb_padding->Resize({-1, x_dims[1]});
+  param_.out_new->Resize({x_dims[0], 1});
+  param_.out_padding->Resize({-1, 1});
+  return true;
+}
+
+bool SearchGroupPaddingOp::AttachImpl(const cpp::OpDesc &op_desc,
+                                      lite::Scope *scope) {
+  auto x = op_desc.Input("X").front();
+  auto out_emb_padding = op_desc.Input("Out_emb_padding").front();
+  auto out_new = op_desc.Input("Out_new").front();
+  auto out_padding = op_desc.Input("Out_padding").front();
+
+  param_.x = scope->FindVar(x)->GetMutable<lite::Tensor>();
+  param_.out_emb_padding =
+      scope->FindVar(out_emb_padding)->GetMutable<lite::Tensor>();
+  param_.out_new = scope->FindVar(out_new)->GetMutable<lite::Tensor>();
+  param_.out_padding = scope->FindVar(out_padding)->GetMutable<lite::Tensor>();
+  param_.pad_id = op_desc.GetAttr<int>("pad_id");
+
+  CHECK(param_.out_emb_padding)
+      << "Output(Out_emb_padding) of SearchGroupPadding Op should not be null.";
+  return true;
+}
+
+}  // namespace operators
+}  // namespace lite
+}  // namespace paddle
+
+REGISTER_LITE_OP(search_group_padding,
+                 paddle::lite::operators::SearchGroupPaddingOp);
diff --git a/lite/operators/search_group_padding_op.h b/lite/operators/search_group_padding_op.h
new file mode 100644
index 0000000000000000000000000000000000000000..a8e96c9697b5f7de70349efa1f8b378a47c3823c
--- /dev/null
+++ b/lite/operators/search_group_padding_op.h
@@ -0,0 +1,41 @@
+// Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#pragma once
+#include <string>
+#include <vector>
+#include "lite/core/op_lite.h"
+#include "lite/core/scope.h"
+
+namespace paddle {
+namespace lite {
+namespace operators {
+
+class SearchGroupPaddingOp : public OpLite {
+ public:
+  SearchGroupPaddingOp() {}
+  explicit SearchGroupPaddingOp(const std::string &op_type) : OpLite(op_type) {}
+  bool CheckShape() const override;
+  bool InferShape() const override;
+  bool AttachImpl(const cpp::OpDesc &opdesc, lite::Scope *scope) override;
+  void AttachKernel(KernelBase *kernel) override { kernel->SetParam(param_); }
+  std::string DebugString() const override { return "search_group_padding"; }
+
+ private:
+  mutable SearchGroupPaddingParam param_;
+};
+
+}  // namespace operators
+}  // namespace lite
+}  // namespace paddle