diff --git a/packages/devui-vue/devui/code-review/src/code-review.scss b/packages/devui-vue/devui/code-review/src/code-review.scss
index ef00494816..771f383b3a 100644
--- a/packages/devui-vue/devui/code-review/src/code-review.scss
+++ b/packages/devui-vue/devui/code-review/src/code-review.scss
@@ -304,4 +304,16 @@
     box-shadow: 0 0 1px 1px rgba(37, 43, 58, 0.16);
     cursor: pointer;
   }
+
+  &--left-selected {
+    .d-code-right span {
+      user-select: none;
+    }
+  }
+
+  &--right-selected {
+    .d-code-left span {
+      user-select: none;
+    }
+  }
 }
diff --git a/packages/devui-vue/devui/code-review/src/code-review.tsx b/packages/devui-vue/devui/code-review/src/code-review.tsx
index e6beb4678d..73ab7c5795 100644
--- a/packages/devui-vue/devui/code-review/src/code-review.tsx
+++ b/packages/devui-vue/devui/code-review/src/code-review.tsx
@@ -31,7 +31,8 @@ export default defineComponent({
       updateLineNumberMap,
       updateCheckedLine,
     } = useCodeReviewComment(reviewContentRef, props, ctx);
-    const { renderHtml, diffFile, onContentClick } = useCodeReview(props, ctx, reviewContentRef, updateLineNumberMap, updateCheckedLine);
+    const { renderHtml, diffFile, selectionSide, onContentClick } =
+    useCodeReview(props, ctx, reviewContentRef, updateLineNumberMap, updateCheckedLine);
     const { isFold, toggleFold } = useCodeReviewFold(props, ctx);
 
     onMounted(() => {
@@ -51,7 +52,7 @@ export default defineComponent({
     });
 
     return () => (
-      <div class={ns.b()}>
+      <div class={[ns.b(), { [ns.m(`${selectionSide.value}-selected`)]: Boolean(selectionSide.value) }]}>
         <CodeReviewHeader onClick={() => (isFold.value = !isFold.value)} />
         <div v-show={!isFold.value}>
           {props.showBlob ? (
diff --git a/packages/devui-vue/devui/code-review/src/composables/use-code-review.ts b/packages/devui-vue/devui/code-review/src/composables/use-code-review.ts
index 5bebeac5ef..dd0b8367f3 100644
--- a/packages/devui-vue/devui/code-review/src/composables/use-code-review.ts
+++ b/packages/devui-vue/devui/code-review/src/composables/use-code-review.ts
@@ -1,11 +1,12 @@
-import { toRefs, ref, watch, nextTick } from 'vue';
+import { toRefs, ref, watch, nextTick, onUnmounted } from 'vue';
 import type { SetupContext, Ref } from 'vue';
 import type { DiffFile } from 'diff2html/lib/types';
 import * as Diff2Html from 'diff2html';
+import { useNamespace } from '../../../shared/hooks/use-namespace';
 import { inBrowser } from '../../../shared/utils/common-var';
 import type { CodeReviewProps, IExpandLineNumberInfo } from '../code-review-types';
 import { useCodeReviewExpand } from './use-code-review-expand';
-import { parseDiffCode } from '../utils';
+import { getSelectionParent, parseDiffCode } from '../utils';
 
 export function useCodeReview(
   props: CodeReviewProps,
@@ -17,6 +18,8 @@ export function useCodeReview(
   const { diff, outputFormat, allowExpand, showBlob } = toRefs(props);
   const renderHtml = ref('');
   const diffFile: Ref<DiffFile[]> = ref([]);
+  const ns = useNamespace('code-review');
+  const selectionSide = ref('');
   const { insertExpandButton, onExpandButtonClick } = useCodeReviewExpand(reviewContentRef, props, updateLineNumberMap, updateCheckedLine);
 
   const initDiffContent = () => {
@@ -34,11 +37,73 @@ export function useCodeReview(
     onExpandButtonClick(e, props.options);
   };
 
+  function onSelectionChange() {
+    if (selectionSide.value) {
+      return;
+    }
+    if (typeof window === 'undefined') {
+      return;
+    }
+    const selection = window.getSelection();
+    if (selection?.toString() && selection?.anchorNode) {
+      const side = getSelectionParent(selection.anchorNode as HTMLElement);
+      if (side) {
+        selectionSide.value = side;
+      }
+    }
+  }
+  function onMousedown(e: Event) {
+    if (typeof window === 'undefined') {
+      return;
+    }
+    const selection = window.getSelection();
+    const composedPath = e.composedPath();
+    const isLineNumber = composedPath.some((item: HTMLElement) => item.classList?.contains('d2h-code-side-linenumber'));
+    const isClickInner = composedPath.some((item: HTMLElement) => item.classList?.contains(ns.e('content')));
+    const clickSide = getSelectionParent(e.target as HTMLElement);
+    if (selection && selection.toString()) {
+      const isInRange = selection?.getRangeAt(0).intersectsNode(e.target);
+      if (
+        !isInRange ||
+        !isClickInner ||
+        (clickSide === 'left' && selectionSide.value === 'right') ||
+        (clickSide === 'right' && selectionSide.value === 'left') ||
+        isLineNumber
+      ) {
+        setTimeout(() => {
+          selectionSide.value = '';
+          selection.removeAllRanges();
+        });
+      }
+    } else {
+      selectionSide.value = '';
+    }
+  }
+
   watch(showBlob, initDiffContent);
 
   watch(outputFormat, initDiffContent);
 
   watch(diff, initDiffContent, { immediate: true });
 
-  return { renderHtml, diffFile, onContentClick };
+  watch(
+    () => props.outputFormat,
+    (val) => {
+      if (val === 'side-by-side') {
+        document.addEventListener('selectionchange', onSelectionChange);
+        document.addEventListener('mousedown', onMousedown, true);
+      } else {
+        document.removeEventListener('selectionchange', onSelectionChange);
+        document.removeEventListener('mousedown', onMousedown, true);
+      }
+    },
+    { immediate: true }
+  );
+
+  onUnmounted(() => {
+    document.removeEventListener('selectionchange', onSelectionChange);
+    document.removeEventListener('mousedown', onMousedown, true);
+  });
+
+  return { renderHtml, diffFile, selectionSide, onContentClick };
 }
diff --git a/packages/devui-vue/devui/code-review/src/utils.ts b/packages/devui-vue/devui/code-review/src/utils.ts
index d8408bf387..fa838bee4e 100644
--- a/packages/devui-vue/devui/code-review/src/utils.ts
+++ b/packages/devui-vue/devui/code-review/src/utils.ts
@@ -721,3 +721,21 @@ export function addCommentCheckedForSingle(
 
   return result;
 }
+
+/* 双栏模式，选中文本时，根据选择的节点查找其父节点，用于判断左侧选中还是右侧选中 */
+export function getSelectionParent(el: HTMLElement) {
+  if (el.tagName === 'TR') {
+    return;
+  }
+  if (el.tagName === 'TD' && (el.classList.contains('d-code-left') || el.classList.contains('d-code-right'))) {
+    if (el.classList.contains('d-code-left')) {
+      return 'left';
+    }
+    if (el.classList.contains('d-code-right')) {
+      return 'right';
+    }
+  }
+  if (el.parentElement) {
+    return getSelectionParent(el.parentElement);
+  }
+}
diff --git a/packages/devui-vue/package.json b/packages/devui-vue/package.json
index 7c8f8ed4cb..9bfc2d75a3 100644
--- a/packages/devui-vue/package.json
+++ b/packages/devui-vue/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-devui",
-  "version": "1.6.30",
+  "version": "1.6.31",
   "license": "MIT",
   "description": "DevUI components based on Vite and Vue3",
   "keywords": [