diff --git a/mindspore/compression/quant/quantizer.py b/mindspore/compression/quant/quantizer.py
index 36a513c7c1..a8bd8c72c0 100644
--- a/mindspore/compression/quant/quantizer.py
+++ b/mindspore/compression/quant/quantizer.py
@@ -17,6 +17,8 @@
 from abc import ABC, abstractmethod
 from enum import Enum
 
+from ..._checkparam import Validator
+
 __all__ = ["OptimizeOption", "Quantizer"]
 
 
@@ -39,12 +41,15 @@ class Quantizer(ABC):
         This class is an abstract class.
 
     Args:
-        optimize_option (OptimizeOption, list or tuple): Specifies the quant algorithm and options. Default: None.
+        optimize_option (OptimizeOption, list or tuple): Specifies the quant algorithm and options. Default:
+            OptimizeOption.QAT.
     """
     def __init__(self,
-                 optimize_option=None):
+                 optimize_option=OptimizeOption.QAT):
         if not isinstance(optimize_option, list) and not isinstance(optimize_option, tuple):
             optimize_option = [optimize_option]
+        for option in optimize_option:
+            option = Validator.check_isinstance("optimize_option", option, OptimizeOption)
         self.optimize_option = optimize_option
 
     @abstractmethod