diff --git a/src/views/index/uploadInvoice.vue b/src/views/index/uploadInvoice.vue
index cb9a3052..04ae95b2 100644
--- a/src/views/index/uploadInvoice.vue
+++ b/src/views/index/uploadInvoice.vue
@@ -370,8 +370,8 @@
         }
 
         //如果前面部分都对得上，但是长度不同，则差异是长度
-        if(difference == 0 && str1.length != str2.length){
-          difference = Math.abs(str1.length - str2.length)
+        if(str1.length != str2.length){
+          difference += Math.abs(str1.length - str2.length)
         }
         // 同样遍历字符串2，处理字符串1中不存在的字符
         /*for (let i = 0; i < str2.length; i++) {