diff --git a/src/components/cstb/Prepare.tsx b/src/components/cstb/Prepare.tsx
index 771c60e..5bcf0be 100644
--- a/src/components/cstb/Prepare.tsx
+++ b/src/components/cstb/Prepare.tsx
@@ -5,6 +5,17 @@ import { useSteamStore } from "@/store/steam"
 import { open } from "@tauri-apps/plugin-dialog"
 import { invoke } from "@tauri-apps/api/core"
 
+/**
+ * 检查指定路径的有效性
+ * @param path - 需要检查的路径
+ * @param suffix - (可选) 路径需要匹配的后缀条件
+ * @returns Promise<boolean> 路径是否有效且满足后缀条件
+ */
+async function check_path(path: string, suffix?: string) {
+  if (suffix && !path.toLowerCase().startsWith(suffix)) return false
+  return await invoke<boolean>("check_path", { path: path })
+}
+
 export function Prepare() {
   const steam = useSteamStore()
   const router = useRouter()
@@ -15,13 +26,11 @@ export function Prepare() {
 
   useEffect(() => {
     const checkPaths = async () => {
-      if (
-        (await invoke("check_path", { path: steam.state.dir })) &&
-        (await invoke("check_path", { path: steam.state.csDir }))
-      ) {
-        setInited(true)
-      }
+      const exist: boolean =
+        (await check_path(steam.state.dir, "steam.exe")) &&
+        (await check_path(steam.state.csDir, "cs2.exe"))
 
+      setInited(exist)
       setLoading(false)
     }
     checkPaths()