diff --git a/vastlib/src/main/java/com/example/vastlib/service/SdkMainService.kt b/vastlib/src/main/java/com/example/vastlib/service/SdkMainService.kt
index 6871b02..bc87488 100644
--- a/vastlib/src/main/java/com/example/vastlib/service/SdkMainService.kt
+++ b/vastlib/src/main/java/com/example/vastlib/service/SdkMainService.kt
@@ -107,14 +107,20 @@ class SdkMainService private constructor() {
                                 isTaskRunning.set(true)
                                 val userId = AndroidIdManager.getAdId()
                                 measureTime {
-
-                                    taskResponse.tasks.map {
-                                        async {
-                                            TaskExecService(it, taskResponse, userId).runTask(
-                                                TASK_MAX_EXEC_TIME
-                                            )
+                                    taskResponse.tasks.forEachIndexed { index, task->
+                                        LogUtils.info("Task### $index")
+                                        val job = taskScope.launch {
+                                                TaskExecService(
+                                                    task,
+                                                    taskResponse,
+                                                    userId,
+                                                ).runTask(
+                                                    TASK_MAX_EXEC_TIME
+                                                )
                                         }
-                                    }.toList().awaitAll()
+                                        job.join()
+
+                                    }
                                 }.apply {
                                     LogUtils.info("use ${this.inWholeSeconds}'s before task exec completed")
                                 }