diff --git a/paddle/phi/kernels/c_softmax_with_cross_entropy_grad_kernel.h b/paddle/phi/kernels/c_softmax_with_cross_entropy_grad_kernel.h
new file mode 100644
index 00000000000000..05d459c8eec6ae
--- /dev/null
+++ b/paddle/phi/kernels/c_softmax_with_cross_entropy_grad_kernel.h
@@ -0,0 +1,29 @@
+// Copyright (c) 2025 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 "paddle/phi/core/dense_tensor.h"
+
+namespace phi {
+template <typename T, typename Context>
+void CSoftmaxWithCrossEntropyGradKernel(const Context& dev_ctx,
+                                        const DenseTensor& softmax_in,
+                                        const DenseTensor& label_in,
+                                        const DenseTensor& loss_grad_in,
+                                        int64_t ignore_index,
+                                        int rank,
+                                        int nranks,
+                                        DenseTensor* logits_grad);
+}  // namespace phi
diff --git a/paddle/phi/kernels/gpu/c_softmax_with_cross_entropy_grad_kernel.cu b/paddle/phi/kernels/gpu/c_softmax_with_cross_entropy_grad_kernel.cu
index 00ca9159a900fd..cb13bcd9ce1b4d 100644
--- a/paddle/phi/kernels/gpu/c_softmax_with_cross_entropy_grad_kernel.cu
+++ b/paddle/phi/kernels/gpu/c_softmax_with_cross_entropy_grad_kernel.cu
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include "paddle/phi/kernels/c_softmax_with_cross_entropy_grad_kernel.h"
 #include "paddle/phi/backends/gpu/gpu_context.h"
 #include "paddle/phi/core/kernel_registry.h"
 #include "paddle/phi/kernels/funcs/axis_utils.h"
diff --git a/paddle/phi/kernels/xpu/c_softmax_with_cross_entropy_grad_kernel.cc b/paddle/phi/kernels/xpu/c_softmax_with_cross_entropy_grad_kernel.cc
index 3333d0a9fdf75c..c394ba94d5273e 100644
--- a/paddle/phi/kernels/xpu/c_softmax_with_cross_entropy_grad_kernel.cc
+++ b/paddle/phi/kernels/xpu/c_softmax_with_cross_entropy_grad_kernel.cc
@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#include "paddle/phi/kernels/c_softmax_with_cross_entropy_grad_kernel.h"
 #include "paddle/phi/backends/xpu/xpu_context.h"
 #include "paddle/phi/common/memory_utils.h"
 #include "paddle/phi/core/kernel_registry.h"