diff --git a/fastNLP/core/instance.py b/fastNLP/core/instance.py
index a2877a8f..a102b51c 100644
--- a/fastNLP/core/instance.py
+++ b/fastNLP/core/instance.py
@@ -30,5 +30,7 @@ class Instance(object):
         return self.add_field(name, field)
 
     def __repr__(self):
+        s = '\''
         return "{" + ",\n".join(
-            "\'" + field_name + "\': " + str(self.fields[field_name]) for field_name in self.fields) + "}"
+            "\'" + field_name + "\': " + str(self.fields[field_name]) +\
+            f" type={(str(type(self.fields[field_name]))).split(s)[1]}" for field_name in self.fields) + "}"
diff --git a/fastNLP/core/losses.py b/fastNLP/core/losses.py
index c11f538c..9b8b8d8f 100644
--- a/fastNLP/core/losses.py
+++ b/fastNLP/core/losses.py
@@ -195,7 +195,7 @@ class CrossEntropyLoss(LossBase):
 
     def get_loss(self, pred, target):
         return F.cross_entropy(input=pred, target=target,
-                                ignore_index=self.padding_idx)
+                               ignore_index=self.padding_idx)
 
 
 class L1Loss(LossBase):