diff --git a/frontend/src/views/app-config/index.vue b/frontend/src/views/app-config/index.vue
index 00318e6..3bb927a 100644
--- a/frontend/src/views/app-config/index.vue
+++ b/frontend/src/views/app-config/index.vue
@@ -1060,21 +1060,24 @@ onMounted(() => {
       </template>
     </el-dialog>
     
-    <!-- 长文本编辑弹窗 -->
+    <!-- 长文本编辑弹窗 - 接近全屏 -->
     <el-dialog 
       v-model="textEditDialogVisible" 
       :title="`编辑：${textEditData.label}`" 
-      width="800px"
+      width="90vw"
+      top="5vh"
       :close-on-click-modal="false"
+      class="text-edit-dialog"
     >
-      <el-input
-        v-model="textEditData.value"
-        type="textarea"
-        :rows="15"
-        :autosize="{ minRows: 10, maxRows: 25 }"
-        :placeholder="textEditData.placeholder"
-        class="text-edit-textarea"
-      />
+      <div class="text-edit-wrapper">
+        <el-input
+          v-model="textEditData.value"
+          type="textarea"
+          :placeholder="textEditData.placeholder"
+          class="text-edit-textarea"
+          resize="none"
+        />
+      </div>
       <div class="text-edit-stats">
         字符数：{{ textEditData.value?.length || 0 }}
       </div>
@@ -1247,18 +1250,46 @@ onMounted(() => {
   background: #ecf5ff;
 }
 
-/* 长文本编辑弹窗样式 */
+/* 长文本编辑弹窗样式 - 接近全屏 */
+.text-edit-dialog :deep(.el-dialog) {
+  max-width: 1200px;
+  margin: 0 auto;
+}
+
+.text-edit-dialog :deep(.el-dialog__body) {
+  padding: 16px 20px;
+  height: calc(80vh - 120px);
+  display: flex;
+  flex-direction: column;
+}
+
+.text-edit-wrapper {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+
+.text-edit-textarea {
+  flex: 1;
+  height: 100%;
+}
+
 .text-edit-textarea :deep(.el-textarea__inner) {
   font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
   font-size: 13px;
   line-height: 1.6;
+  height: 100% !important;
+  min-height: 100% !important;
+  resize: none;
 }
 
 .text-edit-stats {
-  margin-top: 8px;
+  margin-top: 12px;
   text-align: right;
   color: #909399;
   font-size: 12px;
+  flex-shrink: 0;
 }
 
 /* 配置对话框优化 */