diff --git a/src/pages/picking/outbound/num-outbound.vue b/src/pages/picking/outbound/num-outbound.vue
index a5000b9..3a0e0eb 100644
--- a/src/pages/picking/outbound/num-outbound.vue
+++ b/src/pages/picking/outbound/num-outbound.vue
@@ -64,7 +64,7 @@ const maCodeList = ref([])
 // 计算出库最大数量
 const maxNum = computed(() => {
     // 1. 先通过预领数量和已领数量计算剩余待出库数量
-    const waitNum = queryParams.value.preNum - queryParams.value.alNum
+    const waitNum = formatDiff(queryParams.value.preNum, queryParams.value.alNum)
 
     // 2. 判断库存数量是否大于待出库数量 如大于则取待出库数量 如小于则取库存书看了
     return queryParams.value.storageNum > waitNum ? waitNum : queryParams.value.storageNum