diff --git a/backend/services/admin-service/src/infrastructure/parsers/package-parser.service.ts b/backend/services/admin-service/src/infrastructure/parsers/package-parser.service.ts
index e476309..85c8091 100644
--- a/backend/services/admin-service/src/infrastructure/parsers/package-parser.service.ts
+++ b/backend/services/admin-service/src/infrastructure/parsers/package-parser.service.ts
@@ -1,6 +1,3 @@
-import * as fs from 'fs';
-import * as os from 'os';
-import * as path from 'path';
 import { Injectable, Logger, BadRequestException } from '@nestjs/common';
 import { IPackageParser, ParsedPackageInfo } from '../../domain/ports/package-parser.interface';
 
@@ -16,14 +13,47 @@ export class PackageParserService implements IPackageParser {
   }
 
   private async parseApk(buffer: Buffer): Promise<ParsedPackageInfo> {
-    // adbkit-apkreader v3 底层用 yauzl.open()，只接受文件路径而非 Buffer
-    // 先写入临时文件，解析后删除
-    const tmpFile = path.join(os.tmpdir(), `apk-parse-${Date.now()}.apk`);
+    // yauzl.open() 不支持 APK V2/V3 签名格式（EOCD 被签名块挤移），
+    // 改用 yauzl.fromBuffer() + adbkit-apkreader 内部 ManifestParser 直接解析
     try {
-      fs.writeFileSync(tmpFile, buffer);
-      const ApkReader = await import('adbkit-apkreader').then(m => m.default || m);
-      const reader = await ApkReader.open(tmpFile);
-      const manifest = await reader.readManifest();
+      const yauzl = await import('yauzl');
+      const { ManifestParser } = await import('adbkit-apkreader/lib/apkreader/parser/manifest' as any).then(
+        (m: any) => ({ ManifestParser: m.default || m }),
+      );
+      const { BinaryXmlParser } = await import('adbkit-apkreader/lib/apkreader/parser/binaryxml' as any).then(
+        (m: any) => ({ BinaryXmlParser: m.default || m }),
+      );
+
+      const zipfile = await new Promise<any>((resolve, reject) =>
+        yauzl.fromBuffer(buffer, { lazyEntries: true }, (err: any, zf: any) =>
+          err ? reject(err) : resolve(zf),
+        ),
+      );
+
+      const manifestBuffer = await new Promise<Buffer>((resolve, reject) => {
+        zipfile.readEntry();
+        zipfile.on('entry', (entry: any) => {
+          if (entry.fileName === 'AndroidManifest.xml') {
+            zipfile.openReadStream(entry, (err: any, stream: any) => {
+              if (err) return reject(err);
+              const chunks: Buffer[] = [];
+              stream.on('data', (c: Buffer) => chunks.push(c));
+              stream.on('end', () => resolve(Buffer.concat(chunks)));
+              stream.on('error', reject);
+            });
+          } else {
+            zipfile.readEntry();
+          }
+        });
+        zipfile.on('end', () => reject(new Error('AndroidManifest.xml not found')));
+        zipfile.on('error', reject);
+      });
+
+      const binaryXml = new BinaryXmlParser(manifestBuffer);
+      const parsed = binaryXml.parse();
+      const manifestParser = new ManifestParser(parsed);
+      const manifest = manifestParser.parse();
+
       return {
         packageName: manifest.package || 'unknown',
         versionCode: manifest.versionCode || 0,
@@ -39,8 +69,6 @@ export class PackageParserService implements IPackageParser {
         versionName: '0.0.0',
         platform: 'ANDROID',
       };
-    } finally {
-      try { fs.unlinkSync(tmpFile); } catch { /* ignore */ }
     }
   }