diff --git a/simple-mind-map/package-lock.json b/simple-mind-map/package-lock.json
index bf60f753..7e18d130 100644
--- a/simple-mind-map/package-lock.json
+++ b/simple-mind-map/package-lock.json
@@ -15,7 +15,7 @@
         "katex": "^0.16.8",
         "mdast-util-from-markdown": "^1.3.0",
         "pdf-lib": "^1.17.1",
-        "quill": "^2.0.2",
+        "quill": "^2.0.3",
         "tern": "^0.24.3",
         "uuid": "^9.0.0",
         "ws": "^7.5.9",
diff --git a/simple-mind-map/package.json b/simple-mind-map/package.json
index 54f86e57..41fb91b9 100644
--- a/simple-mind-map/package.json
+++ b/simple-mind-map/package.json
@@ -35,7 +35,7 @@
     "katex": "^0.16.8",
     "mdast-util-from-markdown": "^1.3.0",
     "pdf-lib": "^1.17.1",
-    "quill": "^2.0.2",
+    "quill": "^2.0.3",
     "tern": "^0.24.3",
     "uuid": "^9.0.0",
     "ws": "^7.5.9",
diff --git a/simple-mind-map/src/plugins/RichText.js b/simple-mind-map/src/plugins/RichText.js
index ae567a09..e52f0155 100644
--- a/simple-mind-map/src/plugins/RichText.js
+++ b/simple-mind-map/src/plugins/RichText.js
@@ -376,10 +376,9 @@ class RichText {
   // 获取当前正在编辑的内容
   getEditText() {
     // https://github.com/slab/quill/issues/4509
-    return this.quill
-      .getSemanticHTML()
-      .replaceAll(/  +/g, match => ' '.repeat(match.length))
-    // return this.quill.container.firstChild.innerHTML
+    return this.quill.container.firstChild.innerHTML.replaceAll(/  +/g, match =>
+      ' '.repeat(match.length)
+    )
     // 去除ql-cursor节点
     // https://github.com/wanglin2/mind-map/commit/138cc4b3e824671143f0bf70e5c46796f48520d0
     // https://github.com/wanglin2/mind-map/commit/0760500cebe8ec4e8ad84ab63f877b8b2a193aa1
@@ -495,7 +494,8 @@ class RichText {
         'color',
         'background',
         'font',
-        'size'
+        'size',
+        'formula'
       ], // 明确指定允许的格式，不包含有序列表，无序列表等
       theme: 'snow'
     })