diff --git a/bonus-common/bonus-common-core/src/main/java/com/bonus/common/core/utils/encryption/Sm4Utils.java b/bonus-common/bonus-common-core/src/main/java/com/bonus/common/core/utils/encryption/Sm4Utils.java
index 8118f17..cbfe8bc 100644
--- a/bonus-common/bonus-common-core/src/main/java/com/bonus/common/core/utils/encryption/Sm4Utils.java
+++ b/bonus-common/bonus-common-core/src/main/java/com/bonus/common/core/utils/encryption/Sm4Utils.java
@@ -29,7 +29,7 @@ public class Sm4Utils {
             // 返回带盐的加密结果（Hex编码）
             return HexUtil.encodeHexStr(encryptedData);
         } catch (Exception e) {
-            return plainText; // 发生异常时返回null
+            return plainText; // 发生异常时返回传入字符串
         }
     }
 
@@ -47,7 +47,7 @@ public class Sm4Utils {
             byte[] decryptedData = sm4.decrypt(cipherText);
             return new String(decryptedData);
         } catch (Exception e) {
-            return cipherText; // 发生异常时返回null
+            return cipherText; // 发生异常时返回传入字符串
         }
     }