diff --git a/mall-common/src/main/java/com/suisung/mall/common/utils/DistributedLockHelper.java b/mall-common/src/main/java/com/suisung/mall/common/utils/DistributedLockHelper.java
index ecd51293..289c365b 100644
--- a/mall-common/src/main/java/com/suisung/mall/common/utils/DistributedLockHelper.java
+++ b/mall-common/src/main/java/com/suisung/mall/common/utils/DistributedLockHelper.java
@@ -7,6 +7,34 @@ import org.springframework.stereotype.Component;
 
 import java.util.UUID;
 
+/**
+ * 分布式锁工具类
+ *
+ * <p>使用示例:</p>
+ * <pre>
+ * {@code
+ * // 方式1: 简单使用
+ * DistributedLockHelper lockHelper = new DistributedLockHelper();
+ * if (lockHelper.tryLock("order_create_lock", 30)) {
+ *     try {
+ *         // 执行需要加锁的业务逻辑
+ *         createOrder();
+ *     } finally {
+ *         lockHelper.releaseLock("order_create_lock");
+ *     }
+ * }
+ *
+ * // 方式2: 使用自动续期锁
+ * try (DistributedLockHelper.LockHolder lockHolder =
+ *      lockHelper.tryLockWithAutoRenew("batch_process_lock", 30, 300)) {
+ *     if (lockHolder != null) {
+ *         // 执行长时间业务逻辑
+ *         processBatchData();
+ *     }
+ * }
+ * }
+ * </pre>
+ */
 @Component
 public class DistributedLockHelper {