diff --git a/src/extend.js b/src/extend.js
new file mode 100644
index 0000000..ad187c7
--- /dev/null
+++ b/src/extend.js
@@ -0,0 +1,21 @@
+const helper = require('think-helper');
+const Logger = require('./');
+
+const LOGGER = Symbol('logger');
+
+module.exports = {
+  context: {
+    get logger() {
+      if (!this[LOGGER]) {
+        this[LOGGER] = new Logger(helper.parseAdapterConfig(this.config('logger')), true);
+      }
+
+      return this[LOGGER];
+    }
+  },
+  controller: {
+    get logger() {
+      return this.ctx.logger;
+    }
+  }
+};