diff --git a/package.json b/package.json
index 2ac412e..3e306a4 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,8 @@
     "pre-commit": "^1.2.2",
     "validate-commit-msg": "^2.14.0",
     "webpack": "^4.29.3",
-    "webpack-cli": "^3.2.3"
+    "webpack-cli": "^3.2.3",
+    "lodash": "^4.17.11"
   },
   "config": {
     "commitizen": {
diff --git a/src/class/host.js b/src/class/host.js
index 95b4051..8944225 100644
--- a/src/class/host.js
+++ b/src/class/host.js
@@ -260,6 +260,8 @@ class Host {
         const theHost = this;
         let plgs = plugins;
 
+        if (!plgs) throw new Error('params is required');
+
         // compatibel array and object
         if (plgs && !Array.isArray(plgs)) plgs = [plugins];
 
diff --git a/test/interation/main.js b/test/interation/main.js
index eb88f46..6efe54c 100644
--- a/test/interation/main.js
+++ b/test/interation/main.js
@@ -1,4 +1,5 @@
 import test from 'ava';
+import _ from 'lodash';
 
 export default function main({ BtApp, BtPage }) {
     test('[BtPlugin] options.relyOn', (t) => {
@@ -199,24 +200,74 @@ export default function main({ BtApp, BtPage }) {
             },
             beforeAttach({ theHost }) {
                 const plugin = this;
-                return Promise
-                    .resolve()
-                    .then(() => new Promise((resolve) => {
-                        setTimeout(() => {
-                            resolve();
-                        }, 100);
-                    }))
-                    .then(() => {
-                        t.is(plugin.name, pluginContent.data.name);
-                        t.is(theHost.name, appInfo.name);
-                        t.end();
-                    });
+                t.is(plugin.name, pluginContent.data.name);
+                t.is(theHost.name, appInfo.name);
+
+                // theHost is still instanceof BtApp
+                t.truthy(theHost instanceof BtApp);
+
+                // custom method not ready
+                t.is(theHost[plugin.name], undefined);
+
+                // data, handlers not ready
+                t.is(_.get(theHost, `data.${plugin.name}`), undefined);
+                t.is(theHost.onClick, undefined);
+
+                t.end();
+            },
+            customMethod: {
+                sayHello() {
+                    return { msg: 'hello', context: this };
+                },
+            },
+            handler: {
+                onClick() {
+                    return 'clicked';
+                },
+            },
+        };
+        const pluginA = (pluginContent);
+        const app = new BtApp(appInfo);
+
+        app.use(pluginA);
+    });
+
+    test.cb('[BtPlugin] attached', (t) => {
+        const appInfo = {
+            name: Symbol,
+        };
+        const pluginContent = {
+            name: 'pluginA',
+            data: {
+                name: 'pluginA',
+            },
+            attached({ theHost }) {
+                const plugin = this;
+                t.is(plugin.name, pluginContent.data.name);
+                t.is(theHost.name, appInfo.name);
+
+                // theHost is still instanceof BtApp
+                t.truthy(theHost instanceof BtApp);
+
+                // custom method not ready
+                t.is(theHost[plugin.name], undefined);
+
+                // data, handlers was ready
+                t.deepEqual(_.get(theHost, `data.${plugin.name}`), pluginContent.data);
+                t.is(typeof theHost.onClick, 'function');
+
+                t.end();
             },
             customMethod: {
                 sayHello() {
                     return { msg: 'hello', context: this };
                 },
             },
+            handler: {
+                onClick() {
+                    return 'clicked';
+                },
+            },
         };
         const pluginA = (pluginContent);
         const app = new BtApp(appInfo);
@@ -224,6 +275,76 @@ export default function main({ BtApp, BtPage }) {
         app.use(pluginA);
     });
 
+    test.cb('[BtPlugin] initialize', (t) => {
+        const appInfo = {
+            name: Symbol,
+        };
+        const pluginContent = {
+            name: 'pluginA',
+            data: {
+                name: 'pluginA',
+            },
+            initialize({ theHost }) {
+                const plugin = this;
+                t.is(plugin.name, pluginContent.data.name);
+                t.is(theHost.name, appInfo.name);
+
+                // theHost is not instanceof BtApp anymore
+                t.falsy(theHost instanceof BtApp);
+
+                // custom method should ready
+                t.is(typeof theHost[plugin.name].sayHello, 'function');
+
+                // data, handlers was ready
+                t.deepEqual(_.get(theHost, `data.${plugin.name}`), pluginContent.data);
+                t.is(typeof theHost.onClick, 'function');
+
+                t.end();
+            },
+            customMethod: {
+                sayHello() {
+                    return { msg: 'hello', context: this };
+                },
+            },
+            handler: {
+                onClick() {
+                    return 'clicked';
+                },
+            },
+        };
+        const pluginA = (pluginContent);
+        const app = new BtApp(appInfo);
+
+        app.use(pluginA);
+
+        // mock App
+        class App {
+            constructor(btApp) {
+                Object.assign(this, btApp);
+            }
+        }
+        const mockNativeAppInstance = new App(app);
+        mockNativeAppInstance.onLaunch();
+    });
+
+    test.cb('[BtPlugin] name is required', (t) => {
+        const error = t.throws(() => {
+            const app = new BtApp();
+            app.use({});
+        });
+        t.is(error.message, '[BeautyWe:error] params of name are required when create a BtPlugin.');
+        t.end();
+    });
+
+    test.cb('[BtPlugin] use params is required', (t) => {
+        const error = t.throws(() => {
+            const app = new BtApp();
+            app.use();
+        });
+        t.is(error.message, 'params is required');
+        t.end();
+    });
+
     test('[BtPlugin] should run funstacks in sequence', (t) => {
         const status = {
             timestamp: {