diff --git a/util/src/main/java/com/zfoo/util/security/AesUtils.java b/util/src/main/java/com/zfoo/util/security/AesUtils.java
index 083c3738..a9806c47 100644
--- a/util/src/main/java/com/zfoo/util/security/AesUtils.java
+++ b/util/src/main/java/com/zfoo/util/security/AesUtils.java
@@ -20,6 +20,7 @@ import io.netty.util.concurrent.FastThreadLocal;
 import javax.crypto.Cipher;
 import javax.crypto.NoSuchPaddingException;
 import javax.crypto.spec.SecretKeySpec;
+import java.security.InvalidKeyException;
 import java.security.Key;
 import java.security.NoSuchAlgorithmException;
 import java.util.Base64;
@@ -46,13 +47,6 @@ public abstract class AesUtils {
      */
     private static final String ALGORITHM_STR = "AES/ECB/PKCS5Padding";
 
-    private static final FastThreadLocal<Cipher> LOCAL_CIPHER = new FastThreadLocal<Cipher>() {
-        @Override
-        protected Cipher initialValue() throws NoSuchPaddingException, NoSuchAlgorithmException {
-            return Cipher.getInstance(ALGORITHM_STR);
-        }
-    };
-
     static {
         try {
             KEY = new SecretKeySpec(KEY_STR.getBytes(StringUtils.DEFAULT_CHARSET_NAME), ALGORITHM);
@@ -61,6 +55,24 @@ public abstract class AesUtils {
         }
     }
 
+    private static final FastThreadLocal<Cipher> LOCAL_ENCRYPT_CIPHER = new FastThreadLocal<Cipher>() {
+        @Override
+        protected Cipher initialValue() throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException {
+            var cipher = Cipher.getInstance(ALGORITHM_STR);
+            cipher.init(Cipher.ENCRYPT_MODE, KEY);
+            return cipher;
+        }
+    };
+
+    private static final FastThreadLocal<Cipher> LOCAL_DECRYPT_CIPHER = new FastThreadLocal<Cipher>() {
+        @Override
+        protected Cipher initialValue() throws NoSuchPaddingException, NoSuchAlgorithmException, InvalidKeyException {
+            var cipher = Cipher.getInstance(ALGORITHM_STR);
+            cipher.init(Cipher.DECRYPT_MODE, KEY);
+            return cipher;
+        }
+    };
+
 
     /**
      * 对str进行AES加密
@@ -81,8 +93,7 @@ public abstract class AesUtils {
 
     public static byte[] encrypt(byte[] bytes) {
         try {
-            var cipher = LOCAL_CIPHER.get();
-            cipher.init(Cipher.ENCRYPT_MODE, KEY);
+            var cipher = LOCAL_ENCRYPT_CIPHER.get();
             return cipher.doFinal(bytes);
         } catch (Exception e) {
             throw new RuntimeException(e);
@@ -108,8 +119,7 @@ public abstract class AesUtils {
 
     public static byte[] decrypt(byte[] bytes) {
         try {
-            var cipher = LOCAL_CIPHER.get();
-            cipher.init(Cipher.DECRYPT_MODE, KEY);
+            var cipher = LOCAL_DECRYPT_CIPHER.get();
             return cipher.doFinal(bytes);
         } catch (Exception e) {
             throw new RuntimeException(e);
diff --git a/util/src/test/java/com/zfoo/util/security/AesUtilsTest.java b/util/src/test/java/com/zfoo/util/security/AesUtilsTest.java
index 977fdd68..cdaf5a8b 100644
--- a/util/src/test/java/com/zfoo/util/security/AesUtilsTest.java
+++ b/util/src/test/java/com/zfoo/util/security/AesUtilsTest.java
@@ -23,9 +23,11 @@ public class AesUtilsTest {
 
     @Test
     public void test() {
-        String passWord = "hello world";
-        String encodePassWorld = AesUtils.getEncryptString(passWord);
-        Assert.assertEquals(passWord, AesUtils.getDecryptString(encodePassWorld));
+        for (int i = 0; i < 10; i++) {
+            var passWord = "hello world";
+            var encodePassWorld = AesUtils.getEncryptString(passWord);
+            Assert.assertEquals(passWord, AesUtils.getDecryptString(encodePassWorld));
+        }
     }
 
 }