diff --git a/src/js/post.js b/src/js/post.js
index 1bd32b8..61554e9 100644
--- a/src/js/post.js
+++ b/src/js/post.js
@@ -42,16 +42,16 @@ const postContext = {
       }
       // 生成行号
       let codes = $(this).text().split('\n') || []
-      let nums = codes.length - 1
+      let nums = codes.length
       let lineDigit = String(nums).length
       if (lineDigit === 1) lineDigit = 2
       let lis = ''
       for (var i = 0; i < nums; i++) {
+        if (i === nums - 1 && codes[i].trim() === '') {
+          continue
+        }
         lis += `<li ${(lines && /^\s*\|\+\s+/.test(codes[i])) ? 'class="code-select"' : ''}>${String(i + 1).padStart(lineDigit, 0)}</li>`
       }
-      if (codes[nums].trim() !== '') {
-        lis += `<li ${(lines && /^\s*\|\+\s+/.test(codes[i])) ? 'class="code-select"' : ''}>${String(nums + 1).padStart(lineDigit, 0)}</li>`
-      }
       if (lines) {
         $(this).text($(this).text().replace(/(^\s*)\|\+\s/gm, '$1'))
       }
diff --git a/templates/assets/js/post.min.js b/templates/assets/js/post.min.js
index ea29833..e42bba5 100644
--- a/templates/assets/js/post.min.js
+++ b/templates/assets/js/post.min.js
@@ -1 +1 @@
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\ No newline at end of file