diff --git a/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/ims/ImsInventoryMapper.xml b/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/ims/ImsInventoryMapper.xml
index 34ee99d..bea887d 100644
--- a/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/ims/ImsInventoryMapper.xml
+++ b/bonus-modules/bonus-smart-canteen/src/main/resources/mapper/ims/ImsInventoryMapper.xml
@@ -105,7 +105,7 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="materialNum != null">material_num = #{materialNum},</if>
             <if test="fetchNum != null">material_num = material_num - #{fetchNum},</if>
             <if test="inventoryStatus != null">inventory_status = #{inventoryStatus},</if>
-            <if test="inventoryStatus == null">
+            <if test="inventoryStatus == null and fetchNum != null">
                 inventory_status = CASE
                 WHEN (material_num - #{fetchNum}) <![CDATA[ < ]]> min_num THEN 2
                 WHEN (material_num - #{fetchNum}) <![CDATA[ > ]]> max_num THEN 3
@@ -119,7 +119,11 @@ PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
             <if test="updateBy != null">update_by = #{updateBy},</if>
             <if test="updateTime != null">update_time = #{updateTime},</if>
         </trim>
-        where inventory_id = #{inventoryId} and material_num <![CDATA[ >= ]]> #{fetchNum} and del_flag = '0'
+        where inventory_id = #{inventoryId}
+        <if test="fetchNum != null">
+            and material_num <![CDATA[ >= ]]> #{fetchNum}
+        </if>
+        and del_flag = '0'
     </update>
 
     <delete id="deleteImsInventoryByInventoryId" parameterType="Long">