diff --git a/util/src/main/java/com/ccsens/util/SymmetricCryptoUtil.java b/util/src/main/java/com/ccsens/util/SymmetricCryptoUtil.java
index 48cb55c..33fb162 100644
--- a/util/src/main/java/com/ccsens/util/SymmetricCryptoUtil.java
+++ b/util/src/main/java/com/ccsens/util/SymmetricCryptoUtil.java
@@ -2,6 +2,8 @@ package com.ccsens.util;
 
 import cn.hutool.core.codec.Base64;
 import cn.hutool.core.util.CharsetUtil;
+import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
 import cn.hutool.crypto.SecureUtil;
 import cn.hutool.crypto.symmetric.SymmetricAlgorithm;
 import cn.hutool.crypto.symmetric.SymmetricCrypto;
@@ -23,8 +25,12 @@ public class SymmetricCryptoUtil {
 
     /**加密*/
     public static String encrypt(String key, String value){
-        SymmetricCrypto aes = new SymmetricCrypto(SymmetricAlgorithm.AES, Base64.decode(key));
-        return aes.encryptHex(value);
+        String encryptString = null;
+        if(StrUtil.isNotBlank(key) && StrUtil.isNotBlank(value)){
+            SymmetricCrypto aes = new SymmetricCrypto(SymmetricAlgorithm.AES, Base64.decode(key));
+            encryptString = aes.encryptHex(value);
+        }
+        return encryptString;
     }
 
     /**解密*/
diff --git a/util/src/test/java/com/ccsens/util/OtherTest.java b/util/src/test/java/com/ccsens/util/OtherTest.java
index 654d51d..05f49dc 100644
--- a/util/src/test/java/com/ccsens/util/OtherTest.java
+++ b/util/src/test/java/com/ccsens/util/OtherTest.java
@@ -40,12 +40,13 @@ public class OtherTest {
     @Test
     public void test19() {
         String s = SymmetricCryptoUtil.generateKey();
-        String s1 = SymmetricCryptoUtil.encrypt(s, "测试的文字");
+        String s1 = SymmetricCryptoUtil.encrypt(s, null);
         String s2 = SymmetricCryptoUtil.decode(s, "测试的文字");
         System.out.println(s);
         System.out.println(s1);
         System.out.println(s2);
     }
+
     @Test
     public void test18() {
 //        RSA rsa = new RSA();