diff --git a/packages/theme/src/time-range/vars.less b/packages/theme/src/time-range/vars.less
index b7ca1a6349..3346babe3e 100644
--- a/packages/theme/src/time-range/vars.less
+++ b/packages/theme/src/time-range/vars.less
@@ -24,7 +24,7 @@
   // 头部高度
   --tv-TimeRange-header-height: var(--tv-size-height-xl, 48px);
   // 头部行高
-  --tv-TimeRange-header-line-height: 48px;
+  --tv-TimeRange-header-line-height: var(--tv-TimeRange-header-height, 48px);
 
   // 头部文本色
   --tv-TimeRange-header-text-color: var(--tv-color-text-weaken, #808080);