diff --git a/package.json b/package.json
index 5ce9058..5afda8f 100644
--- a/package.json
+++ b/package.json
@@ -73,6 +73,16 @@
         "clang-format.style": {
           "type": "string",
           "default": "file",
+          "enum": [
+            "file",
+            "LLVM",
+            "Google",
+            "Chromium",
+            "Mozilla",
+            "WebKit",
+            "Microsoft",
+            "GNU"
+          ],
           "description": "clang-format style.(-style=value, value can be file, LLVM, Google, Chromium, Mozilla, WebKit or json configure)"
         },
         "clang-format.fallbackStyle": {
@@ -331,4 +341,4 @@
     "url": "https://github.com/xaverh/vscode-clang-format-provider"
   },
   "license": "MIT"
-}
+}
\ No newline at end of file