diff --git a/woa/init.py b/woa/init.py
index 224dd01..9939c18 100644
--- a/woa/init.py
+++ b/woa/init.py
@@ -38,7 +38,7 @@ class WOAHandler:
 		if encoding_aes_key:
 			# 微信的 AES Key 是 base64 编码的 32 字节字符串
 			self.aes_key = base64.b64decode(encoding_aes_key + "=")
-		self.encoding_aes_key = self.aes_key
+		self.aes_key = None
 		self.media_manager = WeChatMediaManager(self.app_id, self.secret)
 
 	def _check_signature(self, signature: str, timestamp: str, nonce: str) -> bool:
@@ -132,7 +132,7 @@ class WOAHandler:
 			# 如果开启加密，echostr 也需要解密
 			debug(f'handle_get():{request.query=}')
 			return web.Response(text=echostr)
-			if self.encoding_aes_key:
+			if self.aes_key:
 				try:
 					echostr = self._decrypt_msg(echostr)
 				except Exception as e:
@@ -217,7 +217,7 @@ class WOAHandler:
 			xml_str = body.decode('utf-8')
 
 			# 3. 如果开启加密，先解密
-			if self.encoding_aes_key:
+			if self.aes_key:
 				root = ET.fromstring(xml_str)
 				encrypt_node = root.find('Encrypt')
 				if encrypt_node is not None and encrypt_node.text:
@@ -237,7 +237,7 @@ class WOAHandler:
 			debug(f'收到微信消息:{msg_dict} 返回:{reply_xml}')
 
 			# 5. 如果需要加密回复
-			if self.encoding_aes_key and reply_xml:
+			if self.aes_key and reply_xml:
 				# 1. 生成新的时间戳和随机数 (不要用请求里的旧数据)
 				timestamp = str(int(time.time()))
 				nonce = ''.join([str(random.randint(0, 9)) for _ in range(10)])