diff --git a/src/cm_utils/cm_disklock.c b/src/cm_utils/cm_disklock.c
index 15b7f14cb4c0a33e4d7e7958889255d8a71c2e78..a7065383fc2cebdee63dcc6b23f1343c65061546 100644
--- a/src/cm_utils/cm_disklock.c
+++ b/src/cm_utils/cm_disklock.c
@@ -524,6 +524,29 @@ unsigned int cm_dl_alloc_lease(
     return lock_id;
 }
 
+int cm_dl_modify_lease(unsigned int lock_id, unsigned int lease_sec)
+{
+    if (lock_id >= CM_MAX_DISKLOCK_COUNT) {
+        LOG_RUN_ERR("DL:invalid lock_id:%u.", lock_id);
+        return CM_DL_ERR_INVALID_LOCK_ID;
+    }
+
+    cm_dl_t *lock_info = &g_dl_ctx.lock_info[lock_id];
+    if (lock_info->fd <= 0) {
+        LOG_RUN_ERR("DL:invalid lock not ready,lock_id:%u.", lock_id);
+        return CM_DL_ERR_INVALID_LOCK_ID;
+    }
+
+    if(lock_info->type != LT_LEASE) {
+        LOG_RUN_ERR("DL:lock is not lease lock,lock_id:%u.", lock_id);
+        return CM_DL_ERR_INVALID_PARAM;
+    }
+
+    lock_info->lease_sec = lease_sec;
+
+    return CM_SUCCESS;
+}
+
 int cm_dl_check_lock_remain(unsigned int lock_id, unsigned long long inst_id, unsigned int *is_remain)
 {
     *is_remain = CM_FALSE;
diff --git a/src/cm_utils/cm_disklock.h b/src/cm_utils/cm_disklock.h
index b01c5e49a8b3d137f99da7e66af51d337d41d80b..21df24c56e4c4bf1ae6cdb398f7462333edb5dea 100644
--- a/src/cm_utils/cm_disklock.h
+++ b/src/cm_utils/cm_disklock.h
@@ -117,6 +117,16 @@ int cm_dl_getowner(unsigned int lock_id, unsigned long long *inst_id);
  * @return != 0 fail
  */
 int cm_dl_getlocktime(unsigned int lock_id, unsigned long long *locktime);
+
+/**
+ * modify the lease lock's lease duration.
+ * @param [in] lock_id: lock_id
+ * @param [in] lease_sec: lease duration,unit second.
+ * @return 0 success
+ * @return != 0 fail
+ */
+int cm_dl_modify_lease(unsigned int lock_id, unsigned int lease_sec);
+
 /**
  * Check whether the lock remains.
  * @param [in] lock_id: lock_id