diff --git a/bin/omarchy-cn-install-overlay b/bin/omarchy-cn-install-overlay
index 89011179..769ea632 100755
--- a/bin/omarchy-cn-install-overlay
+++ b/bin/omarchy-cn-install-overlay
@@ -24,6 +24,30 @@ valid_entry() {
   [[ $1 == "cn" || $1 =~ ^bin/(omarchycn|omarchy-cn-[a-z0-9-]+)$ ]]
 }
 
+MENU_EXT="$HOME/.config/omarchy/extensions/omarchy-menu.jsonc"
+MENU_MARKER="// OmarchyCN overlay menu extension"
+
+install_menu_extension() {
+  if [[ -s $MENU_EXT ]] && ! grep -qF "$MENU_MARKER" "$MENU_EXT"; then
+    echo "跳过菜单扩展：$MENU_EXT 已有用户内容，请手动合并 default/omarchy/omarchy-menu.jsonc 的 OmarchyCN 段"
+    return 0
+  fi
+  mkdir -p "${MENU_EXT%/*}"
+  {
+    echo "$MENU_MARKER"
+    echo "{"
+    sed -n '/^  \/\/ OmarchyCN$/,$p' "$SRC/default/omarchy/omarchy-menu.jsonc" | sed '$d'
+    echo "}"
+  } > "$MENU_EXT"
+  echo "OmarchyCN 菜单扩展已写入 $MENU_EXT"
+}
+
+remove_menu_extension() {
+  if [[ -f $MENU_EXT ]] && grep -qF "$MENU_MARKER" "$MENU_EXT"; then
+    rm -f "$MENU_EXT"
+  fi
+}
+
 uninstall() {
   if [[ ! -f $MANIFEST ]]; then
     echo "No overlay manifest at $MANIFEST" >&2
@@ -55,6 +79,7 @@ uninstall() {
     fi
   done < "$MANIFEST"
 
+  remove_menu_extension
   rm -f "$MANIFEST"
   echo "OmarchyCN overlay removed from $dest"
 }
@@ -104,6 +129,7 @@ install() {
     run_in "$DEST" cp "$SRC/$rel" "$DEST/$rel"
   done
 
+  install_menu_extension
   echo "OmarchyCN overlay installed into $DEST (${#entries[@]} commands)"
   echo "Verify: omarchy cn version"
 }
diff --git a/default/omarchy/omarchy-menu.jsonc b/default/omarchy/omarchy-menu.jsonc
index 4fce6a87..91b15f41 100644
--- a/default/omarchy/omarchy-menu.jsonc
+++ b/default/omarchy/omarchy-menu.jsonc
@@ -382,9 +382,11 @@
   "omarchycn.chinese.fonts": {"icon":"","label":"中文字体 Fonts","action":"omarchy-launch-floating-terminal-with-presentation omarchy-cn-font-apply"},
   "omarchycn.chinese.locale": {"icon":"","label":"中文 Locale","action":"omarchy-launch-floating-terminal-with-presentation omarchy-cn-locale-apply"},
   "omarchycn.display": {"icon":"󰍹","label":"显示缩放 Scale"},
+  "omarchycn.display.s10": {"icon":"󰍹","label":"1.0","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-display-scale 1.0'"},
   "omarchycn.display.s125": {"icon":"󰍹","label":"1.25","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-display-scale 1.25'"},
   "omarchycn.display.s15": {"icon":"󰍹","label":"1.5","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-display-scale 1.5'"},
   "omarchycn.display.s16": {"icon":"󰍹","label":"1.6","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-display-scale 1.6'"},
+  "omarchycn.display.s175": {"icon":"󰍹","label":"1.75","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-display-scale 1.75'"},
   "omarchycn.display.s20": {"icon":"󰍹","label":"2.0","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-display-scale 2.0'"},
   "omarchycn.diagnostics": {"icon":"󰨮","label":"诊断 Diagnostics"},
   "omarchycn.diagnostics.doctor": {"icon":"󰨮","label":"System Doctor","action":"omarchy-launch-floating-terminal-with-presentation 'omarchy-cn-doctor all'"},