diff --git a/paddle/operators/unpool_op.cc b/paddle/operators/unpool_op.cc
index add8f157368ad99c8d3ec73dd4e0bdf828a53506..b5f3d56e9605346e98d4ff2ca7f16978ec7760bd 100644
--- a/paddle/operators/unpool_op.cc
+++ b/paddle/operators/unpool_op.cc
@@ -16,11 +16,9 @@
 namespace paddle {
 namespace operators {
 
-using framework::Tensor;
-
 class Unpool2dOpMaker : public framework::OpProtoAndCheckerMaker {
  public:
-  Unpool2dOpMaker(framework::OpProto* proto,  \
+  Unpool2dOpMaker(framework::OpProto* proto,
                   framework::OpAttrChecker* op_checker)
       : OpProtoAndCheckerMaker(proto, op_checker) {
     AddInput("X",
@@ -38,26 +36,26 @@ class Unpool2dOpMaker : public framework::OpProtoAndCheckerMaker {
         "the number of channels, H and W is the height and "
         "width of feature.");
     AddAttr<std::vector<int>>("ksize",
-        "(vector ), the unpooling window size(height, width) "
+        "(vector), the unpooling window size(height, width) "
         "of unpooling operator.");
     AddAttr<std::vector<int>>("strides",
         "(vector, default:{1, 1}), "
-        "strides(height, width) of unpooling operator.")
+        "strides (height, width) of unpooling operator.")
         .SetDefault({1, 1});
     AddAttr<std::vector<int>>("paddings",
         "(vector defalut:{0,0}), "
-        "paddings(height, width) of unpooling operator.")
+        "paddings (height, width) of unpooling operator.")
         .SetDefault({0, 0});
     AddAttr<std::string>("unpoolingtype",
         "(string), unpooling type, can be \"max\" for max-unpooling ")
         .InEnum({"max"});
     AddComment(R"DOC(
-          "input: the input Tensor to invert"
-          "indices: the indices given out by MaxPool2d"
-          "ksize  – Size of the max pooling window."
-          "stride – Stride of the max pooling window."
-                   "It is set to kernel_size by default."
-          "padding – Padding that was added to the input"
+          "input: the input Tensor to invert
+          indices: the indices given out by MaxPool2d
+          ksize  – Size of the max pooling window.
+          stride – Stride of the max pooling window.
+                   "It is set to kernel_size by default.
+          padding – Padding that was added to the input"
         )DOC");
   }
 };
@@ -80,14 +78,14 @@ class UnpoolOp : public framework::OperatorWithKernel {
 
     auto in_x_dims = ctx->GetInputDim("X");
     auto in_y_dims = ctx->GetInputDim("Y");
-    std::string unpoolingtype =  \
+    std::string unpoolingtype =
       ctx->Attrs().Get<std::string>("unpoolingtype");
     std::vector<int> ksize = ctx->Attrs().Get<std::vector<int>>("ksize");
     std::vector<int> strides = ctx->Attrs().Get<std::vector<int>>("strides");
     std::vector<int> paddings = ctx->Attrs().Get<std::vector<int>>("paddings");
 
     PADDLE_ENFORCE(in_x_dims.size() == 4,
-                    "Unpooling intput should be 4-D.");
+                    "Unpooling intput must be of 4-dimensional.");
     for (int i = 0; i < 4; ++i) {
       PADDLE_ENFORCE(in_x_dims[i] == in_y_dims[i],
                      "X size must be eq Y size!");
diff --git a/paddle/operators/unpool_op.h b/paddle/operators/unpool_op.h
index e3a45ff9a7162da2178cc1e29d15d575deea7e71..e22171649eb39cf7cd14c7f20cd4eea7b56cde7f 100644
--- a/paddle/operators/unpool_op.h
+++ b/paddle/operators/unpool_op.h
@@ -21,15 +21,13 @@ limitations under the License. */
 namespace paddle {
 namespace operators {
 
-using Tensor = framework::Tensor;
-
 template <typename Place, typename T>
 class UnpoolKernel : public framework::OpKernel<T> {
  public:
   void Compute(const framework::ExecutionContext& context) const override {
-    const Tensor* in_x = context.Input<Tensor>("X");
-    const Tensor* in_y = context.Input<Tensor>("Y");
-    auto * out = context.Output<Tensor>("Out");
+    const framework::Tensor* in_x = context.Input<framework::Tensor>("X");
+    const framework::Tensor* in_y = context.Input<framework::Tensor>("Y");
+    auto * out = context.Output<framework::Tensor>("Out");
     std::string unpoolingtype = context.Attr<std::string>("unpoolingtype");
     std::vector<int> ksize = context.Attr<std::vector<int>>("ksize");
     std::vector<int> strides = context.Attr<std::vector<int>>("strides");
@@ -39,15 +37,8 @@ class UnpoolKernel : public framework::OpKernel<T> {
       math::SetConstant<Place, T> set_zero;
       set_zero(context.device_context(), out, static_cast<T>(0));
     }
-    switch (ksize.size()) {
-    case 2: {
-      if (unpoolingtype == "max") {
-        math::Unpool2dMaxFunctor<Place, T> unpool2d_max_forward;
-        unpool2d_max_forward(context.device_context(), *in_x, *in_y, out);
-      }
-    } break;
-    default: { PADDLE_THROW("Pool op only supports 2D input."); }
-    }
+    math::Unpool2dMaxFunctor<Place, T> unpool2d_max_forward;
+    unpool2d_max_forward(context.device_context(), *in_x, *in_y, out);
   }
 };
 
@@ -55,12 +46,13 @@ template <typename Place, typename T>
 class UnpoolGradKernel : public framework::OpKernel<T> {
  public:
   void Compute(const framework::ExecutionContext& context) const override {
-    const Tensor* in_x = context.Input<Tensor>("X");
-    const Tensor* in_y = context.Input<Tensor>("Y");
-    const Tensor* out = context.Input<Tensor>("Out");
-    const Tensor* out_grad =
-        context.Input<Tensor>(framework::GradVarName("Out"));
-    Tensor* in_x_grad = context.Output<Tensor>(framework::GradVarName("X"));
+    const framework::Tensor* in_x = context.Input<framework::Tensor>("X");
+    const framework::Tensor* in_y = context.Input<framework::Tensor>("Y");
+    const framework::Tensor* out = context.Input<framework::Tensor>("Out");
+    const framework::Tensor* out_grad =
+        context.Input<framework::Tensor>(framework::GradVarName("Out"));
+    framework::Tensor* in_x_grad =
+      context.Output<framework::Tensor>(framework::GradVarName("X"));
     std::string unpoolingtype = context.Attr<std::string>("unpoolingtype");
     std::vector<int> ksize = context.Attr<std::vector<int>>("ksize");
     std::vector<int> strides = context.Attr<std::vector<int>>("strides");
@@ -70,18 +62,11 @@ class UnpoolGradKernel : public framework::OpKernel<T> {
     math::SetConstant<Place, T> zero;
     if (in_x_grad) {
       in_x_grad->mutable_data<T>(context.GetPlace());
-      zero(device_ctx, in_x_grad, static_cast<T>(0.0));
-    }
-    switch (ksize.size()) {
-    case 2: {
-    if (unpoolingtype == "max") {
-      math::Unpool2dMaxGradFunctor<Place, T> unpool2d_max_backward;
-      unpool2d_max_backward(context.device_context(), *in_x, *in_y, in_x_grad,
-                            *out, *out_grad);
-      }
-    } break;
-    default: { PADDLE_THROW("Unpool op only supports 2D input."); }
+      zero(device_ctx, in_x_grad, static_cast<T>(0));
     }
+    math::Unpool2dMaxGradFunctor<Place, T> unpool2d_max_backward;
+    unpool2d_max_backward(context.device_context(), *in_x, *in_y, in_x_grad,
+                          *out, *out_grad);
   }
 };