diff --git a/fastNLP/core/metrics.py b/fastNLP/core/metrics.py
index ef6f8b69..007485b2 100644
--- a/fastNLP/core/metrics.py
+++ b/fastNLP/core/metrics.py
@@ -118,6 +118,7 @@ class MetricBase(object):
     def __init__(self):
         self._param_map = {}  # key is param in function, value is input param.
         self._checked = False
+        self._metric_name = self.__class__.__name__
 
     @property
     def param_map(self):
@@ -135,6 +136,22 @@ class MetricBase(object):
     @abstractmethod
     def get_metric(self, reset=True):
         raise NotImplemented
+
+    def set_metric_name(self, name:str):
+        """
+        设置metric的名称，默认是Metric的class name.
+
+        :param str name:
+        :return:
+        """
+        self._metric_name = name
+
+    def get_metric_name(self):
+        """
+        返回metric的名称
+        :return:
+        """
+        return self._metric_name
     
     def _init_param_map(self, key_map=None, **kwargs):
         """检查key_map和其他参数map，并将这些映射关系添加到self._param_map
diff --git a/fastNLP/core/tester.py b/fastNLP/core/tester.py
index ab86fb62..e4d67261 100644
--- a/fastNLP/core/tester.py
+++ b/fastNLP/core/tester.py
@@ -178,7 +178,7 @@ class Tester(object):
                         if not isinstance(eval_result, dict):
                             raise TypeError(f"The return value of {_get_func_signature(metric.get_metric)} must be "
                                             f"`dict`, got {type(eval_result)}")
-                        metric_name = metric.__class__.__name__
+                        metric_name = metric.get_metric_name()
                         eval_results[metric_name] = eval_result
 
                     end_time = time.time()