diff --git a/paddle/fluid/framework/new_executor/interpreter/interpreter_util.cc b/paddle/fluid/framework/new_executor/interpreter/interpreter_util.cc
index 1f6cd392ec0bf9f3cfee6166e1f692edc5b844b5..1baf27928bdecdf6827a38cc369658d134c38a6a 100644
--- a/paddle/fluid/framework/new_executor/interpreter/interpreter_util.cc
+++ b/paddle/fluid/framework/new_executor/interpreter/interpreter_util.cc
@@ -58,7 +58,6 @@ static std::set<std::string> OpsNeedSetOutputDtypeWhenRegisterPhiKernel = {
     "angle",
     "any_raw",
     "arg_sort",
-    "as_real",
     "atan2",
     "auc",
     "bincount",
diff --git a/paddle/phi/infermeta/unary.cc b/paddle/phi/infermeta/unary.cc
index 0f001ff023e9e60859da5344eed53cfb487f6407..b2e9e6535394df26d943899388345a525a225720 100644
--- a/paddle/phi/infermeta/unary.cc
+++ b/paddle/phi/infermeta/unary.cc
@@ -273,6 +273,7 @@ void AsRealInferMeta(const MetaTensor& input, MetaTensor* output) {
   auto out_dims = phi::make_ddim(out_dims_v);
   output->set_dims(out_dims);
   output->share_lod(input);
+  output->set_dtype(dtype::ToReal(input.dtype()));
 }
 
 void AsComplexInferMeta(const MetaTensor& input, MetaTensor* output) {
diff --git a/paddle/phi/kernels/cpu/as_real_kernel.cc b/paddle/phi/kernels/cpu/as_real_kernel.cc
index eb7584a28d6c0aefaa69cbe314972d42145b8a8b..5541a887c9f9b63178d274b1c8d06ed6136151cb 100644
--- a/paddle/phi/kernels/cpu/as_real_kernel.cc
+++ b/paddle/phi/kernels/cpu/as_real_kernel.cc
@@ -23,4 +23,6 @@ using complex64 = ::phi::dtype::complex<float>;
 using complex128 = ::phi::dtype::complex<double>;
 
 PD_REGISTER_KERNEL(
-    as_real, CPU, ALL_LAYOUT, phi::AsRealKernel, complex64, complex128) {}
+    as_real, CPU, ALL_LAYOUT, phi::AsRealKernel, complex64, complex128) {
+  kernel->OutputAt(0).SetDataType(paddle::experimental::DataType::UNDEFINED);
+}
diff --git a/paddle/phi/kernels/gpu/as_real_kernel.cu b/paddle/phi/kernels/gpu/as_real_kernel.cu
index c6cb3aca22629e7a48f16325394eed1db61fb4a8..83976381844239290cd5ed8fff09d79da7982e92 100644
--- a/paddle/phi/kernels/gpu/as_real_kernel.cu
+++ b/paddle/phi/kernels/gpu/as_real_kernel.cu
@@ -23,4 +23,6 @@ using complex64 = ::phi::dtype::complex<float>;
 using complex128 = ::phi::dtype::complex<double>;
 
 PD_REGISTER_KERNEL(
-    as_real, GPU, ALL_LAYOUT, phi::AsRealKernel, complex64, complex128) {}
+    as_real, GPU, ALL_LAYOUT, phi::AsRealKernel, complex64, complex128) {
+  kernel->OutputAt(0).SetDataType(paddle::experimental::DataType::UNDEFINED);
+}