diff --git a/recv/recv.py b/recv/recv.py
index 8e085d6..98679c3 100644
--- a/recv/recv.py
+++ b/recv/recv.py
@@ -7,7 +7,7 @@ from entity.Letter import Letter
 from tool import PriKeyHelper, DownloadPathTool
 from tool.asymmetric import RSA
 from tool.hash import Segwit
-from tool.symmetric import SM4
+from tool.symmetric import SM4, AES
 
 
 def getLetter():
@@ -40,9 +40,9 @@ def handleLetter(letter: Letter):
     elif type == config.EncryptType.SM4_CBC:
         data = base64.b64decode(SM4.decrypt_cbc_with_iv(letter.fileBase64, key))
     elif type == config.EncryptType.AES_ECB:
-        raise NotImplementedError("未实现")
+        data = AES.AESUtils(key).decrypt(letter.fileBase64)
     elif type == config.EncryptType.AES_CBC:
-        raise NotImplementedError("未实现")
+        data = AES.AESUtils(key).decrypt(letter.fileBase64,"cbc")
     else:
         raise KeyError("不支持的对称加密算法")
 
diff --git a/recv/test_recv.py b/recv/test_recv.py
index ca0ad29..1106e10 100644
--- a/recv/test_recv.py
+++ b/recv/test_recv.py
@@ -2,12 +2,31 @@ from unittest.mock import patch
 
 import recv
 from sender import sender
-from tool import PriKeyHelper
+
+
+@patch('builtins.input', side_effect=['./public.pem', 'aes', 'ecb'])
+def test_handleLetter_aes_ecb(mock_input):
+    letter = sender.main()
+    recv.handleLetter(letter)
+    pass
+
+
+@patch('builtins.input', side_effect=['./public.pem', 'aes', 'cbc'])
+def test_handleLetter_aes_cbc(mock_input):
+    letter = sender.main()
+    recv.handleLetter(letter)
+    pass
+
+
+@patch('builtins.input', side_effect=['./public.pem', 'sm4', 'ecb'])
+def test_handleLetter_sm4_ecb(mock_input):
+    letter = sender.main()
+    recv.handleLetter(letter)
+    pass
 
 
 @patch('builtins.input', side_effect=['./public.pem', 'sm4', 'cbc'])
-def test_handleLetter(mock_input):
-    pki = PriKeyHelper.getUserKey()
+def test_handleLetter_sm4_cbc(mock_input):
     letter = sender.main()
     recv.handleLetter(letter)
     pass