diff --git a/web/hwlab-cloud-web/scripts/workbench-native-vite-config.test.ts b/web/hwlab-cloud-web/scripts/workbench-native-vite-config.test.ts
index fce65748..31624c4f 100644
--- a/web/hwlab-cloud-web/scripts/workbench-native-vite-config.test.ts
+++ b/web/hwlab-cloud-web/scripts/workbench-native-vite-config.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, test } from "bun:test";
 
-import { parseWorkbenchNativeRuntimeConfig } from "../vite.config";
+import { nativeViteCacheDir, parseWorkbenchNativeRuntimeConfig } from "../vite.config";
 
 const validConfig = {
   displayTime: { timeZone: "Asia/Shanghai", locale: "zh-CN", label: "北京时间" },
@@ -19,4 +19,13 @@ describe("Workbench native Vite runtime config", () => {
   test("fails closed when required runtime capabilities are missing", () => {
     expect(() => parseWorkbenchNativeRuntimeConfig(JSON.stringify({ displayTime: validConfig.displayTime, workbench: {} }))).toThrow("workbench.realtimeFeatures");
   });
+
+  test("isolates Vite optimizer caches by native runtime", () => {
+    const workbench = nativeViteCacheDir({ nativeApiUrl: "http://127.0.0.1:6677", nativeCaseRunEnabled: false });
+    const caserun = nativeViteCacheDir({ nativeApiUrl: "", nativeCaseRunEnabled: true });
+    const cloudWeb = nativeViteCacheDir({ nativeApiUrl: "", nativeCaseRunEnabled: false });
+
+    expect(new Set([workbench, caserun, cloudWeb]).size).toBe(3);
+    expect(workbench).toBe(".state/vite/workbench");
+  });
 });
diff --git a/web/hwlab-cloud-web/vite.config.ts b/web/hwlab-cloud-web/vite.config.ts
index f7d261ce..6ad34196 100644
--- a/web/hwlab-cloud-web/vite.config.ts
+++ b/web/hwlab-cloud-web/vite.config.ts
@@ -31,6 +31,7 @@ export default defineConfig(({ mode }) => {
       : undefined;
 
   return {
+    cacheDir: nativeViteCacheDir({ nativeApiUrl, nativeCaseRunEnabled }),
     plugins: [
       ...(nativeApiUrl ? [nativeRuntimeConfigPlugin(nativeRuntimeConfig)] : []),
       ...(nativeCaseRunEnabled ? [nativeCaseRunRuntimeConfigPlugin()] : []),
@@ -65,6 +66,11 @@ export default defineConfig(({ mode }) => {
   };
 });
 
+export function nativeViteCacheDir(input: { nativeApiUrl: string; nativeCaseRunEnabled: boolean }): string {
+  const runtime = input.nativeApiUrl ? "workbench" : input.nativeCaseRunEnabled ? "caserun" : "cloud-web";
+  return `.state/vite/${runtime}`;
+}
+
 function nativeRuntimeConfigPlugin(serialized: string): Plugin {
   const config = parseWorkbenchNativeRuntimeConfig(serialized);
   const inlineJson = JSON.stringify(config).replace(/</gu, "\\u003c");