diff --git a/paddle/phi/kernels/cpu/size_kernel.cc b/paddle/phi/kernels/cpu/size_kernel.cc
index 4019976ecec9c61014d9f508367be7ed93c08327..a070c2de5bc4473a9e61063b41583fd7e4bffbad 100644
--- a/paddle/phi/kernels/cpu/size_kernel.cc
+++ b/paddle/phi/kernels/cpu/size_kernel.cc
@@ -27,6 +27,7 @@ PD_REGISTER_KERNEL(size,
                    int,
                    int64_t,
                    phi::dtype::float16,
+                   phi::dtype::bfloat16,
                    float,
                    double,
                    bool) {}
diff --git a/paddle/phi/kernels/gpu/size_kernel.cu b/paddle/phi/kernels/gpu/size_kernel.cu
index fb6acd5599a8e5c9b81923c73dc045f0dc1a6f90..a165e6c82df96b7aef7609e0b8f62d9111ca63b1 100644
--- a/paddle/phi/kernels/gpu/size_kernel.cu
+++ b/paddle/phi/kernels/gpu/size_kernel.cu
@@ -26,6 +26,7 @@ PD_REGISTER_KERNEL(size,
                    int,
                    int64_t,
                    phi::dtype::float16,
+                   phi::dtype::bfloat16,
                    float,
                    double,
                    bool) {}