diff --git a/src/views/home/chart.vue b/src/views/home/chart.vue
index 4100864..f274e7d 100644
--- a/src/views/home/chart.vue
+++ b/src/views/home/chart.vue
@@ -135,6 +135,9 @@ onUnmounted(() => {
 })
 
 const formatSeconds = (seconds: number) => {
+  if (seconds === -1) {
+    seconds = 0
+  }
   const hours = Math.floor(seconds / 3600)
   const minutes = Math.floor((seconds % 3600) / 60)
   const remainingSeconds = seconds % 60
@@ -167,10 +170,7 @@ const formatSeconds = (seconds: number) => {
             <span v-if="disinfectionState.state === 'disinfection'"> 预计剩余时间: </span>
             <span v-else> 消毒状态： </span>
           </div>
-          <div
-            v-if="homeStore.disinfectionState.curStateRemainTimeS && disinfectionState.state !== 'preheat'"
-            class="home-chart-value"
-          >
+          <div v-if="disinfectionState.state === 'disinfection'" class="home-chart-value">
             {{ formatSeconds(homeStore.disinfectionState.curStateRemainTimeS) }}
           </div>
           <div v-else class="home-chart-value">