diff --git a/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs b/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs
index 77eb8c4..f0972de 100644
--- a/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs
+++ b/YD_AllHeartRates.Api/Services/Impl/LargeScreenService.cs
@@ -159,6 +159,11 @@ namespace YD_AllHeartRates.Api.Services.Impl
 
                 var jumpRope = _caching.Get<JumpRopeData>(jumpRopeKey);
 
+                if (jumpRope == null)
+                {
+                    jumpRope = await _userContext.JumpRopeData.Where(x => x.StudentNo == student.StudentNo).FirstOrDefaultAsync();
+                }
+
                 // ❗心率缓存未命中 → 单独查数据库
                 //if (heartRate == null)
                 //{