diff --git a/paddle/fluid/operators/lerp_op.cc b/paddle/fluid/operators/lerp_op.cc
deleted file mode 100644
index 84e82e2950755b450644e16e5e7b9a2a5dcb5896..0000000000000000000000000000000000000000
--- a/paddle/fluid/operators/lerp_op.cc
+++ /dev/null
@@ -1,100 +0,0 @@
-// Copyright (c) 2021 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 "paddle/fluid/framework/infershape_utils.h"
-#include "paddle/fluid/framework/op_registry.h"
-#include "paddle/phi/core/infermeta_utils.h"
-#include "paddle/phi/infermeta/ternary.h"
-
-namespace paddle {
-namespace operators {
-
-class LerpOp : public framework::OperatorWithKernel {
- public:
-  using framework::OperatorWithKernel::OperatorWithKernel;
-};
-
-class LerpOpMaker : public framework::OpProtoAndCheckerMaker {
- public:
-  void Make() override {
-    AddInput("X", "(Tensor), The input tensor of lerp op.");
-    AddInput("Y", "(Tensor), The input tensor of lerp op.");
-    AddInput("Weight", "(Tensor, optional), The input tensor of lerp op.");
-    AddOutput("Out", "(Tensor), The output tensor of lerp op.");
-    AddComment(R"DOC(
-Lerp Operator.
-
-This operator is used to do a linear interpolation of input $X$ and $Y$ with $Weight$.
-
-The equation is:
-
-$$Out = X + Weight * (Y - X)$$
-
-Both the input $X$ and $Y$ can carry the LoD (Level of Details) information,
-or not. But the output only shares the LoD information with input $X$.
-
-)DOC");
-  }
-};
-
-class LerpGradOp : public framework::OperatorWithKernel {
- public:
-  using framework::OperatorWithKernel::OperatorWithKernel;
-
-  void InferShape(framework::InferShapeContext* ctx) const override {
-    if (ctx->HasOutput(framework::GradVarName("X"))) {
-      ctx->SetOutputDim(framework::GradVarName("X"), ctx->GetInputDim("X"));
-    }
-    if (ctx->HasOutput(framework::GradVarName("Y"))) {
-      ctx->SetOutputDim(framework::GradVarName("Y"), ctx->GetInputDim("Y"));
-    }
-  }
-};
-
-template <typename T>
-class LerpOpGradMaker : public framework::SingleGradOpMaker<T> {
- public:
-  using framework::SingleGradOpMaker<T>::SingleGradOpMaker;
-
-  void Apply(GradOpPtr<T> op) const override {
-    op->SetType("lerp_grad");
-    op->SetInput("X", this->Input("X"));
-    op->SetInput("Y", this->Input("Y"));
-    op->SetInput("Weight", this->Input("Weight"));
-    op->SetInput("Out", this->Output("Out"));
-    op->SetInput(framework::GradVarName("Out"), this->OutputGrad("Out"));
-    op->SetOutput(framework::GradVarName("X"), this->InputGrad("X"));
-    op->SetOutput(framework::GradVarName("Y"), this->InputGrad("Y"));
-    op->SetAttrMap(this->Attrs());
-  }
-};
-
-DECLARE_INPLACE_OP_INFERER(LerpInplaceInferer, {"X", "Out"});
-
-}  // namespace operators
-}  // namespace paddle
-
-DECLARE_INFER_SHAPE_FUNCTOR(lerp,
-                            LerpInferShapeFunctor,
-                            PD_INFER_META(phi::LerpInferMeta));
-REGISTER_OPERATOR(
-    lerp,
-    paddle::operators::LerpOp,
-    paddle::operators::LerpOpMaker,
-    paddle::operators::LerpOpGradMaker<paddle::framework::OpDesc>,
-    paddle::operators::LerpOpGradMaker<paddle::imperative::OpBase>,
-    paddle::operators::LerpInplaceInferer,
-    LerpInferShapeFunctor);
-
-REGISTER_OPERATOR(lerp_grad, paddle::operators::LerpGradOp);
diff --git a/paddle/phi/api/yaml/backward.yaml b/paddle/phi/api/yaml/backward.yaml
index a67e791c4d9ec7c068b6eb960e6b10ea585171fc..44afc43c046d70fd189064bc699b9853d11e7750 100644
--- a/paddle/phi/api/yaml/backward.yaml
+++ b/paddle/phi/api/yaml/backward.yaml
@@ -588,6 +588,16 @@
   backward : leaky_relu_double_grad
   inplace : (out_grad -> x_grad)
 
+- backward_op : lerp_grad
+  forward : lerp (Tensor x, Tensor y, Tensor weight) -> Tensor(out)
+  args : (Tensor x, Tensor y, Tensor weight, Tensor out, Tensor out_grad)
+  output : Tensor(x_grad), Tensor(y_grad)
+  infer_meta :
+    func : GeneralBinaryGradInferMeta
+    param : [x, y]
+  kernel :
+    func : lerp_grad
+
 - backward_op : lgamma_grad
   forward : lgamma(Tensor x) -> Tensor(out)
   args : (Tensor x, Tensor out_grad)
diff --git a/paddle/phi/api/yaml/legacy_backward.yaml b/paddle/phi/api/yaml/legacy_backward.yaml
index 17854d80c7abda762e8b2c3e5857d636e42b7a83..814b3c89c01a11e8eb5c8d5c83cb0933d9dae147 100755
--- a/paddle/phi/api/yaml/legacy_backward.yaml
+++ b/paddle/phi/api/yaml/legacy_backward.yaml
@@ -749,16 +749,6 @@
   no_need_buffer : bias
   optional : scale, bias
 
-- backward_op : lerp_grad
-  forward : lerp (Tensor x, Tensor y, Tensor weight) -> Tensor(out)
-  args : (Tensor x, Tensor y, Tensor weight, Tensor out, Tensor out_grad)
-  output : Tensor(x_grad), Tensor(y_grad)
-  infer_meta :
-    func : GeneralBinaryGradInferMeta
-    param : [x, y]
-  kernel :
-    func : lerp_grad
-
 - backward_op : linear_interp_grad
   forward : linear_interp (Tensor x, Tensor out_size, Tensor[] size_tensor, Tensor scale_tensor, str data_layout, int out_d, int out_h, int out_w, float[] scale, str interp_method, bool align_corners, int align_mode) -> Tensor(output)
   args : (Tensor x, Tensor out_size, Tensor[] size_tensor, Tensor scale_tensor, Tensor output_grad, str data_layout, int out_d, int out_h, int out_w, float[] scale, str interp_method, bool align_corners, int align_mode)
diff --git a/paddle/phi/api/yaml/legacy_ops.yaml b/paddle/phi/api/yaml/legacy_ops.yaml
index 5f1f55596cee5c76a85117beaf5786d007b6c176..b506c41cdff1635fa35bdcfd628390962f1e20b3 100755
--- a/paddle/phi/api/yaml/legacy_ops.yaml
+++ b/paddle/phi/api/yaml/legacy_ops.yaml
@@ -1039,16 +1039,6 @@
   backward : layer_norm_grad
   optional : scale, bias
 
-- op : lerp
-  args : (Tensor x, Tensor y, Tensor weight)
-  output : Tensor(out)
-  infer_meta :
-    func : LerpInferMeta
-  kernel :
-    func : lerp
-  inplace : (x -> out)
-  backward : lerp_grad
-
 - op : less_equal
   args : (Tensor x, Tensor y)
   output : Tensor(out)
diff --git a/paddle/phi/api/yaml/op_compat.yaml b/paddle/phi/api/yaml/op_compat.yaml
index 0c59acbc98839a67ecb5138a9c5785212dc5129e..5640ca7eb8b0ff9f4db4e45a398b8a29024cb056 100644
--- a/paddle/phi/api/yaml/op_compat.yaml
+++ b/paddle/phi/api/yaml/op_compat.yaml
@@ -680,6 +680,13 @@
   extra :
     attrs : [bool use_mkldnn = false]
 
+- op : lerp
+  backward : lerp_grad
+  inputs :
+    {x : X, y : Y, weight : Weight}
+  outputs :
+    out : Out
+
 - op : lgamma
   inputs :
     x : X
diff --git a/paddle/phi/api/yaml/ops.yaml b/paddle/phi/api/yaml/ops.yaml
index 45fa68a37678c4a3259eaaedef4ca2036767e25b..10b6645c61667b92d8d8a56fd7c75e82bb7a602f 100644
--- a/paddle/phi/api/yaml/ops.yaml
+++ b/paddle/phi/api/yaml/ops.yaml
@@ -563,6 +563,16 @@
     func : leaky_relu
   backward : leaky_relu_grad
 
+- op : lerp
+  args : (Tensor x, Tensor y, Tensor weight)
+  output : Tensor(out)
+  infer_meta :
+    func : LerpInferMeta
+  kernel :
+    func : lerp
+  inplace : (x -> out)
+  backward : lerp_grad
+
 - op : lgamma
   args : (Tensor x)
   output : Tensor(out)
diff --git a/paddle/phi/ops/compat/lerp_sig.cc b/paddle/phi/ops/compat/lerp_sig.cc
deleted file mode 100644
index 154424468d6605615f415ea7db7741119a3c6fb0..0000000000000000000000000000000000000000
--- a/paddle/phi/ops/compat/lerp_sig.cc
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright (c) 2022 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 "paddle/phi/core/compat/op_utils.h"
-
-namespace phi {
-
-KernelSignature LerpOpArgumentMapping(const ArgumentMappingContext& ctx) {
-  return KernelSignature("lerp", {"X", "Y", "Weight"}, {}, {"Out"});
-}
-
-KernelSignature LerpGradOpArgumentMapping(const ArgumentMappingContext& ctx) {
-  return KernelSignature("lerp_grad",
-                         {"X", "Y", "Weight", "Out", "Out@GRAD"},
-                         {},
-                         {"X@GRAD", "Y@GRAD"});
-}
-
-}  // namespace phi
-
-PD_REGISTER_ARG_MAPPING_FN(lerp, phi::LerpOpArgumentMapping);
-PD_REGISTER_ARG_MAPPING_FN(lerp_grad, phi::LerpGradOpArgumentMapping);