diff --git a/apps/mtm/models.py b/apps/mtm/models.py
index 8836d176..bc642b8e 100644
--- a/apps/mtm/models.py
+++ b/apps/mtm/models.py
@@ -72,7 +72,7 @@ class Material(CommonAModel):
         ordering = ['sort', '-create_time']
 
     def __str__(self):
-        return f'{self.name}-{self.model}-{self.specification}'
+        return f'{self.name}|{self.specification}|{self.model}'
 
 
 class Shift(CommonBModel):