diff --git a/src/views/home/index.vue b/src/views/home/index.vue
index 50236bc..5409e31 100644
--- a/src/views/home/index.vue
+++ b/src/views/home/index.vue
@@ -44,12 +44,17 @@ onMounted(() => {
   })
 })
 
-// 当前消毒液余量百分比
+// 当前消毒液余量百分比（最大不超过100）
 const nowLiquidProgress = computed(() => {
-  if (!liquidInfo.value.nowLiquid) {
+  const now = Number(liquidInfo.value.nowLiquid)
+  const total = Number(liquidTotal.value)
+  if (!now || total <= 0) {
     return 0
   }
-  return roundNumber(Number((liquidInfo.value.nowLiquid / liquidTotal.value) * 100), 0)
+  // 先算出百分比并四舍五入
+  const rawPercent = roundNumber((now / total) * 100, 0)
+  // 如果大于100，就返回100；否则返回原值
+  return rawPercent > 100 ? 100 : rawPercent
 })
 
 // 当前消毒液余量