diff --git a/common/src/main/java/tech/deepq/common/utils/signature/MD5SignatureService.java b/common/src/main/java/tech/deepq/common/utils/signature/MD5SignatureService.java
deleted file mode 100644
index 58ee26f..0000000
--- a/common/src/main/java/tech/deepq/common/utils/signature/MD5SignatureService.java
+++ /dev/null
@@ -1,37 +0,0 @@
-package tech.deepq.common.utils.signature;
-
-import org.springframework.util.DigestUtils;
-import tech.deepq.common.dto.SignatureConfig;
-
-import java.nio.charset.StandardCharsets;
-import java.security.GeneralSecurityException;
-
-/**
- * @author yechuan
- * @since 2023/9/1 09:46
- **/
-public class MD5SignatureService extends AbstractSignatureService {
-
-    private final static MD5SignatureService instance = new MD5SignatureService();
-
-    private MD5SignatureService() {
-
-    }
-
-    public static AbstractSignatureService getInstance(SignatureConfig signatureConfig) throws GeneralSecurityException {
-        return instance;
-    }
-
-    /**
-     * 对content进行加密
-     */
-    @Override
-    public String signatureContent(String content) {
-        return DigestUtils.md5DigestAsHex((content).getBytes(StandardCharsets.UTF_8));
-    }
-
-    @Override
-    void init(SignatureConfig signatureConfig) {
-        return;
-    }
-}
diff --git a/common/src/main/java/tech/deepq/common/utils/signature/Md5SignatureService.java b/common/src/main/java/tech/deepq/common/utils/signature/Md5SignatureService.java
index b3ccc5e..94bdd36 100644
--- a/common/src/main/java/tech/deepq/common/utils/signature/Md5SignatureService.java
+++ b/common/src/main/java/tech/deepq/common/utils/signature/Md5SignatureService.java
@@ -27,7 +27,7 @@ class Md5SignatureService extends AbstractSignatureService {
      * @throws GeneralSecurityException
      */
     @Override
-    public String signature(String content) throws GeneralSecurityException {
+    public String signatureContent(String content) throws GeneralSecurityException {
         return DigestUtils.md5DigestAsHex(content.getBytes(StandardCharsets.UTF_8)).toUpperCase();
     }
 }