diff --git a/文本处理工具/剪贴板文本整理_mathpix.ipynb b/文本处理工具/剪贴板文本整理_mathpix.ipynb
index 63ccb6ab..6b80b9f4 100644
--- a/文本处理工具/剪贴板文本整理_mathpix.ipynb
+++ b/文本处理工具/剪贴板文本整理_mathpix.ipynb
@@ -286,6 +286,10 @@
     "\n",
     "for equation in raw_equations:\n",
     "    equation1 = equation\n",
+    "    #删除一些无效大括号\n",
+    "    for i in range(3):\n",
+    "        equation1 = re.sub(r\"_\\{([0-9a-zA-Z])\\}\",lambda x:\"_\"+x.group(1),equation1)\n",
+    "        equation1 = re.sub(r\"\\^\\{([0-9a-zA-Z])\\}\",lambda x:\"^\"+x.group(1),equation1)\n",
     "    #合并一些公式中的无效空格\n",
     "    for i in range(2):\n",
     "        equation1 = re.sub(r\"([0-9A-Z])\\s+([0-9A-Z])\",lambda x:x.group(1)+x.group(2),equation1)\n",
@@ -392,12 +396,12 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.8.15"
+   "version": "3.9.15 (main, Nov 24 2022, 14:39:17) [MSC v.1916 64 bit (AMD64)]"
   },
   "orig_nbformat": 4,
   "vscode": {
    "interpreter": {
-    "hash": "42dd566da87765ddbe9b5c5b483063747fec4aacc5469ad554706e4b742e67b2"
+    "hash": "ff3c292c316ba85de6f1ad75f19c731e79d694e741b6f515ec18f14996fe48dc"
    }
   }
  },