diff --git a/src/components/LiquidHandle.vue b/src/components/LiquidHandle.vue
index e1af4b9..46180ad 100644
--- a/src/components/LiquidHandle.vue
+++ b/src/components/LiquidHandle.vue
@@ -214,6 +214,11 @@ const formatter = value => {
 }
 
 const startAdd = () => {
+  let value = parseInt(addLiquidVal.value);
+  if ( 0 === value || value > 5000 ) {
+    console.warn(`加液量不合法 : ${value}`);
+    return;
+  }
   if (!(operatorStore.replenishingFluidsWorkState == 1)) {
     webSocketStore.sendCommandMsg(
       startReplenishingFluidsJSON(parseInt(addLiquidVal.value)),