diff --git a/paddle/phi/kernels/flatten_grad_kernel.cc b/paddle/phi/kernels/flatten_grad_kernel.cc
index 54279fca6e429e3da9b7fc3a5726f27ab78f4cd1..73d963f606e3f1a26125dce66b0298c213c8bdff 100644
--- a/paddle/phi/kernels/flatten_grad_kernel.cc
+++ b/paddle/phi/kernels/flatten_grad_kernel.cc
@@ -38,6 +38,7 @@ PD_REGISTER_KERNEL(flatten_grad,
                    CPU,
                    ALL_LAYOUT,
                    phi::FlattenGradKernel,
+                   phi::dtype::bfloat16,
                    float,
                    double,
                    uint8_t,
@@ -52,6 +53,7 @@ PD_REGISTER_KERNEL(flatten_grad,
                    phi::FlattenGradKernel,
                    float,
                    phi::dtype::float16,
+                   phi::dtype::bfloat16,
                    double,
                    uint8_t,
                    int8_t,
diff --git a/paddle/phi/kernels/flatten_kernel.cc b/paddle/phi/kernels/flatten_kernel.cc
index dd000896073c70fedf82a501e84200837e4af4d1..006d3438288c1e3c6fa02069bf2fec99ccdf6469 100644
--- a/paddle/phi/kernels/flatten_kernel.cc
+++ b/paddle/phi/kernels/flatten_kernel.cc
@@ -54,6 +54,7 @@ PD_REGISTER_KERNEL(flatten,
                    ALL_LAYOUT,
                    phi::FlattenKernel,
                    float,
+                   phi::dtype::bfloat16,
                    double,
                    uint8_t,
                    int8_t,
@@ -66,6 +67,7 @@ PD_REGISTER_KERNEL(flatten_with_xshape,
                    ALL_LAYOUT,
                    phi::FlattenWithXShape,
                    float,
+                   phi::dtype::bfloat16,
                    double,
                    uint8_t,
                    int8_t,
@@ -80,6 +82,7 @@ PD_REGISTER_KERNEL(flatten,
                    phi::FlattenKernel,
                    float,
                    phi::dtype::float16,
+                   phi::dtype::bfloat16,
                    double,
                    uint8_t,
                    int8_t,
@@ -93,6 +96,7 @@ PD_REGISTER_KERNEL(flatten_with_xshape,
                    phi::FlattenWithXShape,
                    float,
                    phi::dtype::float16,
+                   phi::dtype::bfloat16,
                    double,
                    uint8_t,
                    int8_t,