diff --git a/System/Jwt/JWTConstant.php b/System/Jwt/JWTConstant.php
deleted file mode 100644
index 97fabba1..00000000
--- a/System/Jwt/JWTConstant.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-namespace Kiri\Jwt;
-
-class JWTConstant
-{
-
-	const AES_128_ECB              = 'aes-128-ecb';
-	const AES_192_ECB              = 'aes-192-ecb';
-	const AES_256_ECB              = 'aes-256-ecb';
-	const ARIA_128_ECB             = 'aria-128-ecb';
-	const ARIA_192_ECB             = 'aria-192-ecb';
-	const ARIA_256_ECB             = 'aria-256-ecb';
-	const BF_ECB                   = 'bf-ecb';
-	const CAMELLIA_128_ECB         = 'camellia-128-ecb';
-	const CAMELLIA_192_ECB         = 'camellia-192-ecb';
-	const CAMELLIA_256_ECB         = 'camellia-256-ecb';
-	const CAST5_ECB                = 'cast5-ecb';
-	const DES_ECB                  = 'des-ecb';
-	const DES_EDE                  = 'des-ede';
-	const DES_EDE3                 = 'des-ede3';
-	const ID_SMIME_ALG_CMS3DESWRAP = 'id-smime-alg-CMS3DESwrap';
-	const IDEA_ECB                 = 'idea-ecb';
-	const RC2_ECB                  = 'rc2-ecb';
-	const RC4                      = 'rc4';
-	const RC4_40                   = 'rc4-40';
-	const RC4_HMAC_MD5             = 'rc4-hmac-md5';
-	const SEED_ECB                 = 'seed-ecb';
-	const SM4_ECB                  = 'sm4-ecb';
-
-}
diff --git a/System/Jwt/Jwt.php b/System/Jwt/Jwt.php
index 5a1fb295..95181d81 100644
--- a/System/Jwt/Jwt.php
+++ b/System/Jwt/Jwt.php
@@ -46,9 +46,7 @@ class Jwt extends Component
 		$jwt = Config::get('jwt', []);
 		if ($jwt) {
 			$this->setScene($jwt['scene'] ?? 'application');
-			$this->setEncrypt($jwt['encrypt'] ?? JWTConstant::AES_128_ECB);
 			$this->setKey($jwt['key'] ?? get_called_class());
-
 			$length = openssl_cipher_iv_length($this->encrypt);
 			if ($length > 0) {
 				$defaultIv = openssl_random_pseudo_bytes($length);
diff --git a/System/Jwt/JwtHelper.php b/System/Jwt/JwtHelper.php
index ea8862fc..306fef6b 100644
--- a/System/Jwt/JwtHelper.php
+++ b/System/Jwt/JwtHelper.php
@@ -26,7 +26,7 @@ trait JwtHelper
 	private string $scene = 'default';
 
 
-	private string $encrypt = '';
+	private string $encrypt = 'aes-128-ecb';
 
 
 	private string $iv = '';