diff --git a/src/main/java/com/biutag/supervision/mapper/MailMapper.java b/src/main/java/com/biutag/supervision/mapper/MailMapper.java
index 5eb9e5d..ae4c050 100644
--- a/src/main/java/com/biutag/supervision/mapper/MailMapper.java
+++ b/src/main/java/com/biutag/supervision/mapper/MailMapper.java
@@ -16,12 +16,12 @@ import java.util.List;
 @DS("mailbox")
 public interface MailMapper extends BaseMapper<Mail> {
     @Select("SELECT  " +
-            "TO_CHAR(DATE_TRUNC('month', create_time), 'MM') AS name,  " +
+            "TO_CHAR(DATE_TRUNC('month', mail_time), 'MM') AS name,  " +
             "COUNT(*) AS value  " +
             "FROM mailbox.mail  " +
-            "WHERE EXTRACT(YEAR FROM create_time) = #{year}  " +
+            "WHERE EXTRACT(YEAR FROM mail_time) = #{year}  " +
             "AND mail_state !='terminated'  " +
-            "GROUP BY TO_CHAR(DATE_TRUNC('month', create_time), 'MM')  " +
+            "GROUP BY TO_CHAR(DATE_TRUNC('month', mail_time), 'MM')  " +
             "ORDER BY name;")
     List<EchartsVo> selectTrendByYear(Integer year);