diff --git a/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/account/AccCardMapper.xml b/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/account/AccCardMapper.xml
index 9678d05..7635c05 100644
--- a/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/account/AccCardMapper.xml
+++ b/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/account/AccCardMapper.xml
@@ -33,7 +33,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
         <where>
             <if test="userId != null "> and ac.user_id = #{userId}</if>
             <if test="accountId != null "> and ac.account_id = #{accountId}</if>
-            <if test="serialNum != null  and serialNum != ''"> and ac.serial_num = #{serialNum}</if>
+            <if test="serialNum != null  and serialNum != ''"> and ac.serial_num like concat('%', #{serialNum}, '%')</if>
             <if test="cardNature != null  and cardNature != ''"> and ac.card_nature = #{cardNature}</if>
             <if test="cardType != null "> and ac.card_type = #{cardType}</if>
             <if test="deposit != null "> and ac.deposit = #{deposit}</if>