diff --git a/webui/src/components/ParameterForm.vue b/webui/src/components/ParameterForm.vue
index 6aef34d..ffe4dc3 100644
--- a/webui/src/components/ParameterForm.vue
+++ b/webui/src/components/ParameterForm.vue
@@ -632,7 +632,10 @@ const calculate = async () => {
       const paramsWithAnimation = {
         parameter: toRaw(rawParams.parameter),
         advance: toRaw(rawParams.advance),
-        optional: toRaw(rawParams.optional),
+        optional: {
+          ...toRaw(rawParams.optional),
+          voltage_n: 1  // 强制将电压份数设置为1
+        },
         animation_enabled: animationRef.value?.isEnabled() ?? false
       }
       await window.pywebview.api.calculate(paramsWithAnimation)