diff --git a/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitService.swift b/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitService.swift
index 2be3ff0..2686a97 100644
--- a/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitService.swift
+++ b/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitService.swift
@@ -255,12 +255,17 @@ internal class StoreKitService: ObservableObject {
             switch result {
             case .success(let verification):
                 do {
+                    let payload = verification.jwsRepresentation
                     let transaction = try verifyPurchase(verification)
                     
                     await printProductDetails(product)
                     // 打印详细的交易信息
                     await printTransactionDetails(transaction)
                     
+                    await MainActor.run {
+                        self.delegate?.service(self, didCompletePurchaseFor: transaction.productID, payload: payload)
+                    }
+                    
                     // 先完成交易
                     await transaction.finish()
                     
@@ -561,11 +566,13 @@ internal class StoreKitService: ObservableObject {
             // 持续监听，直到任务被取消
             while !Task.isCancelled {
                 // 检查所有订阅的状态（并行检查，提高效率）
-                let now = Date()
-                let formatter = DateFormatter()
-                formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
-                formatter.timeZone = TimeZone.current
-                print("当前订阅检测时间: \(formatter.string(from: now))")
+                if self.config.showLog {
+                    let now = Date()
+                    let formatter = DateFormatter()
+                    formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
+                    formatter.timeZone = TimeZone.current
+                    print("当前订阅检测时间: \(formatter.string(from: now))")
+                }
                 await self.checkSubscriptionStatus()
                 
                 // 等待指定间隔（默认30秒）后再次检查
diff --git a/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitServiceDelegate.swift b/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitServiceDelegate.swift
index b859ff6..723e438 100644
--- a/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitServiceDelegate.swift
+++ b/keyBoard/Class/Pay/StoreKit2Manager/Internal/StoreKitServiceDelegate.swift
@@ -20,5 +20,7 @@ internal protocol StoreKitServiceDelegate: AnyObject {
     
     /// 已购买交易订单更新
     func service(_ service: StoreKitService, didUpdatePurchasedTransactions efficient: [Transaction], latests: [Transaction])
+    
+    /// 某个交易完成（验证成功）
+    func service(_ service: StoreKitService, didCompletePurchaseFor productId: String, payload: String)
 }
-
diff --git a/keyBoard/Class/Pay/StoreKit2Manager/KBStoreKitBridge.swift b/keyBoard/Class/Pay/StoreKit2Manager/KBStoreKitBridge.swift
index f70e24f..aedc377 100644
--- a/keyBoard/Class/Pay/StoreKit2Manager/KBStoreKitBridge.swift
+++ b/keyBoard/Class/Pay/StoreKit2Manager/KBStoreKitBridge.swift
@@ -52,7 +52,7 @@ final class KBStoreKitBridge: NSObject, StoreKitDelegate {
             do {
                 try await self.manager.purchase(productId: productId)
                 
-                if let payload = await Self.latestJWSPayload(for: productId) {
+                if let payload = await self.fetchPayload(for: productId) {
                     self.verifySignedPayload(payload, completion: completion)
                 } else {
                     await MainActor.run {
@@ -115,10 +115,24 @@ final class KBStoreKitBridge: NSObject, StoreKitDelegate {
         }
     }
     
-    private static func latestJWSPayload(for productId: String) async -> String? {
-        guard let result = await Transaction.latest(for: productId) else { return nil }
-        if case .verified = result {
-            return result.jwsRepresentation
+    @MainActor
+    private func fetchPayload(for productId: String) async -> String? {
+        if let payload = manager.consumeRecentPayload(for: productId) {
+            return payload
+        }
+        return await Self.latestJWSPayload(for: productId, retryCount: 3)
+    }
+    
+    private static func latestJWSPayload(for productId: String, retryCount: Int = 1) async -> String? {
+        var attempts = 0
+        while attempts < retryCount {
+            if let result = await Transaction.latest(for: productId), case .verified = result {
+                return result.jwsRepresentation
+            }
+            attempts += 1
+            if attempts < retryCount {
+                try? await Task.sleep(nanoseconds: 300_000_000) // 0.3s
+            }
         }
         return nil
     }
diff --git a/keyBoard/Class/Pay/StoreKit2Manager/StoreKitManager.swift b/keyBoard/Class/Pay/StoreKit2Manager/StoreKitManager.swift
index d2aef5a..0323216 100644
--- a/keyBoard/Class/Pay/StoreKit2Manager/StoreKitManager.swift
+++ b/keyBoard/Class/Pay/StoreKit2Manager/StoreKitManager.swift
@@ -80,6 +80,9 @@ public class StoreKit2Manager {
     /// 每个产品的最新交易记录集合
     public private(set) var latestTransactions: [Transaction] = []
     
+    /// 最近一次完成购买的交易签名缓存（按产品ID）
+    private var recentJWSPayloads: [String: String] = [:]
+    
     // MARK: - 按类型分类的产品（计算属性）
     
     /// 非消耗品
@@ -379,6 +382,14 @@ public class StoreKit2Manager {
         return latestTransactions
     }
     
+    /// 获取指定产品最近一次完成的 JWS（仅限 StoreKitService 捕获到的交易）
+    /// - Parameter productId: 产品 ID
+    /// - Returns: 若存在则返回并移除缓存
+    @MainActor
+    func consumeRecentPayload(for productId: String) -> String? {
+        return recentJWSPayloads.removeValue(forKey: productId)
+    }
+    
     /// 获取交易历史
     /// - Parameter productId: 可选的产品ID，如果提供则只返回该产品的交易历史
     /// - Returns: 交易历史记录数组，按购买日期倒序排列
@@ -532,5 +543,9 @@ extension StoreKit2Manager: StoreKitServiceDelegate {
         // 通知闭包回调
         onPurchasedTransactionsUpdated?(efficient, latests)
     }
+    
+    @MainActor
+    func service(_ service: StoreKitService, didCompletePurchaseFor productId: String, payload: String) {
+        recentJWSPayloads[productId] = payload
+    }
 }
-
diff --git a/keyBoard/Class/Pay/VM/PayVM.m b/keyBoard/Class/Pay/VM/PayVM.m
index 88026a2..4f68c86 100644
--- a/keyBoard/Class/Pay/VM/PayVM.m
+++ b/keyBoard/Class/Pay/VM/PayVM.m
@@ -39,7 +39,7 @@
             return;
         }
         
-        if (completion) completion(KBBizCodeSuccess, @"ok");
+        if (completion) completion(KBBizCodeSuccess, @"JWS-ok");
     }];
 }