diff --git a/tools/aes_encrypt.py b/tools/aes_encrypt.py
index 5f943a9..7cc662e 100644
--- a/tools/aes_encrypt.py
+++ b/tools/aes_encrypt.py
@@ -9,7 +9,11 @@ aes加密解密工具 目前仅支持ECB/CBC 块长度均为128位 padding只支
 pycryptdemo限制 同一个aes加密对象不能即加密又解密 所以当加密和解密都需要执行时 需要重新new一个对象增加额外开销
  -- A cipher object is stateful: once you have encrypted a message , you cannot encrypt (or decrypt) another message using the same object.　
 """
-from Crypto.Cipher import AES
+try:
+    from Crypto.Cipher import AES
+except:
+    print("检测到还未安装 pycryptdemo 请按照md的方法安装")
+    exit(0)
 from binascii import b2a_hex, a2b_hex
 from base64 import b64encode, b64decode
 class AES_Ctypt:
diff --git a/tools/encrypt_symmetric.py b/tools/encrypt_symmetric.py
index 2160590..feea8e6 100644
--- a/tools/encrypt_symmetric.py
+++ b/tools/encrypt_symmetric.py
@@ -15,7 +15,11 @@ aes加密解密工具 目前仅支持ECB/CBC 块长度均为128位 padding只支
 pycryptdemo限制 同一个aes加密对象不能即加密又解密 所以当加密和解密都需要执行时 需要重新new一个对象增加额外开销
  -- A cipher object is stateful: once you have encrypted a message , you cannot encrypt (or decrypt) another message using the same object.　
 """
-from Crypto.Cipher import AES, DES, DES3
+try:
+    from Crypto.Cipher import AES, DES, DES3
+except:
+    print("检测到还未安装 pycryptdemo 请按照md的方法安装")
+    exit(0)
 from binascii import b2a_hex, a2b_hex
 from base64 import b64encode, b64decode
 
diff --git a/tools/rsa_encrypt.py b/tools/rsa_encrypt.py
index b215943..54ccc1f 100644
--- a/tools/rsa_encrypt.py
+++ b/tools/rsa_encrypt.py
@@ -4,8 +4,12 @@
 # @Author : github@limoruirui https://github.com/limoruirui
 # @Time : 2022/8/23 13:05
 # -------------------------------
-from Crypto.PublicKey.RSA import importKey, construct
-from Crypto.Cipher import PKCS1_v1_5
+try:
+    from Crypto.PublicKey.RSA import importKey, construct
+    from Crypto.Cipher import PKCS1_v1_5
+except:
+    print("检测到还未安装 pycryptdemo 请按照md的方法安装")
+    exit(0)
 from base64 import b64encode