diff --git a/mindpet/delta/delta_constants.py b/mindpet/delta/delta_constants.py
index e05a709..c271f06 100755
--- a/mindpet/delta/delta_constants.py
+++ b/mindpet/delta/delta_constants.py
@@ -5,4 +5,4 @@
 from mindspore import dtype as mstype
 
 # 算法精度与类型控制
-VALID_TENSOR_DATATYPE = [mstype.float16, mstype.float32]
+VALID_TENSOR_DATATYPE = [mstype.float16, mstype.float32, mstype.bfloat16]