diff --git a/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseConfig.kt b/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseConfig.kt
index fad10be..4937509 100644
--- a/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseConfig.kt
+++ b/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseConfig.kt
@@ -5,4 +5,6 @@ data class LicenseConfig(
     val baseUrl: String = "https://auth.dev.xuqinmin.com/",
     val deviceName: String? = null,
     val cacheWindowMs: Long = 10 * 60 * 1000L, // 10 minutes
+    /** True when initialized from a license file; package name validated locally before any network call. */
+    val fromLicenseFile: Boolean = false,
 )
diff --git a/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseSDK.kt b/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseSDK.kt
index e9799ca..95eb9f3 100644
--- a/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseSDK.kt
+++ b/sdk-license/src/main/java/com/xuqm/sdk/license/LicenseSDK.kt
@@ -84,8 +84,9 @@ object LicenseSDK {
     /**
      * Check license status. This will:
      * 1. Return cached OK status if within cache window
-     * 2. Try to verify existing token
-     * 3. Register new device if no token exists
+     * 2. Validate package name (locally for license-file flow; via server for appKey flow)
+     * 3. Try to verify existing token
+     * 4. Register new device if no token exists
      *
      * @return LicenseResult.Success if license is valid, LicenseResult.Error otherwise
      */
@@ -100,6 +101,26 @@ object LicenseSDK {
             return@withContext LicenseResult.Success("Cached")
         }
 
+        // appKey-only flow: fetch configured package names from server and validate locally
+        if (!config.fromLicenseFile) {
+            val actualPackage = appContext.packageName
+            try {
+                val infoResp = apiService.getAppInfo(config.appKey)
+                val appInfo = infoResp.data
+                if (appInfo != null) {
+                    val anyConfigured = !appInfo.androidPackageName.isNullOrBlank()
+                            || !appInfo.iosBundleId.isNullOrBlank()
+                            || !appInfo.harmonyBundleName.isNullOrBlank()
+                    if (anyConfigured && !appInfo.matchesPackageName(actualPackage)) {
+                        persistStatus(STATUS_DENIED)
+                        return@withContext LicenseResult.Error("Package name not authorized: $actualPackage")
+                    }
+                }
+            } catch (_: Exception) {
+                // If app-info fetch fails due to network, fall through and let register/verify handle it
+            }
+        }
+
         val deviceId = getOrCreateDeviceId()
         val token = store.token
 
@@ -251,6 +272,13 @@ object LicenseSDK {
             val ctx = LicenseContextHolder.appContext ?: return false
             val licenseFile = LicenseFileReader.read(ctx) ?: return false
             val appKey = licenseFile.appKey.takeIf { it.isNotBlank() } ?: return false
+
+            // Validate package name locally before any network call
+            val configuredPackageName = licenseFile.packageName
+            if (!configuredPackageName.isNullOrBlank() && configuredPackageName != ctx.packageName) {
+                return false
+            }
+
             appContext = ctx
             store = LicenseStore(ctx)
             if (store.appKey != null && store.appKey != appKey) {
@@ -261,6 +289,7 @@ object LicenseSDK {
                 appKey = appKey,
                 baseUrl = normalizeBaseUrl(licenseFile.baseUrl ?: DEFAULT_BASE_URL),
                 deviceName = DeviceInfoProvider.getDeviceName(),
+                fromLicenseFile = true,
             )
             apiService = LicenseHttpClient.create(LicenseApiService::class.java, config.baseUrl)
             initialized = true
diff --git a/sdk-license/src/main/java/com/xuqm/sdk/license/api/LicenseApiService.kt b/sdk-license/src/main/java/com/xuqm/sdk/license/api/LicenseApiService.kt
index 9263ed5..1d8e2fa 100644
--- a/sdk-license/src/main/java/com/xuqm/sdk/license/api/LicenseApiService.kt
+++ b/sdk-license/src/main/java/com/xuqm/sdk/license/api/LicenseApiService.kt
@@ -1,12 +1,15 @@
 package com.xuqm.sdk.license.api
 
 import com.xuqm.sdk.license.model.ApiResponse
+import com.xuqm.sdk.license.model.AppInfoResponse
 import com.xuqm.sdk.license.model.RegisterRequest
 import com.xuqm.sdk.license.model.RegisterResponse
 import com.xuqm.sdk.license.model.VerifyRequest
 import com.xuqm.sdk.license.model.VerifyResponse
 import retrofit2.http.Body
+import retrofit2.http.GET
 import retrofit2.http.POST
+import retrofit2.http.Query
 
 interface LicenseApiService {
 
@@ -15,4 +18,7 @@ interface LicenseApiService {
 
     @POST("api/license/verify")
     suspend fun verify(@Body request: VerifyRequest): ApiResponse<VerifyResponse>
+
+    @GET("api/license/app-info")
+    suspend fun getAppInfo(@Query("appKey") appKey: String): ApiResponse<AppInfoResponse>
 }
diff --git a/sdk-license/src/main/java/com/xuqm/sdk/license/model/LicenseModels.kt b/sdk-license/src/main/java/com/xuqm/sdk/license/model/LicenseModels.kt
index e004bfd..055d015 100644
--- a/sdk-license/src/main/java/com/xuqm/sdk/license/model/LicenseModels.kt
+++ b/sdk-license/src/main/java/com/xuqm/sdk/license/model/LicenseModels.kt
@@ -43,3 +43,12 @@ data class LicenseUserInfo(
     @SerializedName("email") val email: String? = null,
     @SerializedName("phone") val phone: String? = null,
 )
+
+data class AppInfoResponse(
+    @SerializedName("androidPackageName") val androidPackageName: String? = null,
+    @SerializedName("iosBundleId") val iosBundleId: String? = null,
+    @SerializedName("harmonyBundleName") val harmonyBundleName: String? = null,
+) {
+    fun matchesPackageName(packageName: String): Boolean =
+        packageName == androidPackageName || packageName == iosBundleId || packageName == harmonyBundleName
+}