diff --git a/ktx/src/main/java/luyao/util/ktx/base/BaseActivity.kt b/ktx/src/main/java/luyao/util/ktx/base/BaseActivity.kt
index a153844..3b68aa7 100644
--- a/ktx/src/main/java/luyao/util/ktx/base/BaseActivity.kt
+++ b/ktx/src/main/java/luyao/util/ktx/base/BaseActivity.kt
@@ -3,12 +3,15 @@ package luyao.util.ktx.base
 import android.content.Intent
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 
 /**
  * Created by luyao
  * on 2019/5/31 15:44
  */
-abstract class BaseActivity : AppCompatActivity() {
+abstract class BaseActivity : AppCompatActivity(), CoroutineScope by MainScope() {
 
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -31,4 +34,9 @@ abstract class BaseActivity : AppCompatActivity() {
         val intent = Intent(this, z).putExtra(name, value)
         startActivity(intent)
     }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        cancel()
+    }
 }
\ No newline at end of file
diff --git a/ktx/src/main/java/luyao/util/ktx/base/BaseFragment.kt b/ktx/src/main/java/luyao/util/ktx/base/BaseFragment.kt
index be2bbf9..31c36fc 100644
--- a/ktx/src/main/java/luyao/util/ktx/base/BaseFragment.kt
+++ b/ktx/src/main/java/luyao/util/ktx/base/BaseFragment.kt
@@ -4,12 +4,15 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.MainScope
+import kotlinx.coroutines.cancel
 
 /**
  * Created by luyao
  * on 2019/6/10 10:47
  */
-abstract class BaseFragment : androidx.fragment.app.Fragment() {
+abstract class BaseFragment : androidx.fragment.app.Fragment(), CoroutineScope by MainScope() {
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         return inflater.inflate(getLayoutResId(), container, false)
@@ -26,4 +29,9 @@ abstract class BaseFragment : androidx.fragment.app.Fragment() {
     abstract fun initView()
 
     abstract fun initData()
+
+    override fun onDestroy() {
+        super.onDestroy()
+        cancel()
+    }
 }
\ No newline at end of file
diff --git a/ktx/src/main/java/luyao/util/ktx/base/BaseViewModel.kt b/ktx/src/main/java/luyao/util/ktx/base/BaseViewModel.kt
index a0207a8..d957711 100644
--- a/ktx/src/main/java/luyao/util/ktx/base/BaseViewModel.kt
+++ b/ktx/src/main/java/luyao/util/ktx/base/BaseViewModel.kt
@@ -21,7 +21,7 @@ open class BaseViewModel : ViewModel(), LifecycleObserver {
 
     }
 
-    suspend fun <T> launchIO(block: suspend CoroutineScope.() -> T) {
+    suspend fun <T> launchOnIO(block: suspend CoroutineScope.() -> T) {
         withContext(Dispatchers.IO) {
             block
         }