diff --git a/src/utils/index.ts b/src/utils/index.ts
index a8caa4a..0e714f0 100644
--- a/src/utils/index.ts
+++ b/src/utils/index.ts
@@ -32,7 +32,7 @@ export function addOtherInfo(personList: any[]) {
 }
 
 export function selectCard(cardIndexArr: number[], tableLength: number, personId: number): number {
-  const cardIndex = Math.round(Math.random() * (tableLength - 1))
+  const cardIndex = Math.floor(Math.random() * (tableLength - 1))
   if (cardIndexArr.includes(cardIndex)) {
     return selectCard(cardIndexArr, tableLength, personId)
   }
diff --git a/src/views/Home/index.vue b/src/views/Home/index.vue
index e14d16c..9351c44 100644
--- a/src/views/Home/index.vue
+++ b/src/views/Home/index.vue
@@ -425,7 +425,8 @@ function startLottery() {
   luckyCount.value = leftover < luckyCount.value ? leftover : luckyCount.value
   for (let i = 0; i < luckyCount.value; i++) {
     if (personPool.value.length > 0) {
-      const randomIndex = Math.round(Math.random() * (personPool.value.length - 1))
+      // 解决随机元素概率过于不均等问题
+      const randomIndex = Math.floor(Math.random() * (personPool.value.length - 1))
       luckyTargets.value.push(personPool.value[randomIndex])
       personPool.value.splice(randomIndex, 1)
     }
@@ -587,8 +588,9 @@ function randomBallData(mod: 'default' | 'lucky' | 'sphere' = 'default') {
     const cardRandomIndexArr: number[] = []
     const personRandomIndexArr: number[] = []
     for (let i = 0; i < indexLength; i++) {
-      const randomCardIndex = Math.round(Math.random() * (tableData.value.length - 1))
-      const randomPersonIndex = Math.round(Math.random() * (allPersonList.value.length - 1))
+      // 解决随机元素概率过于不均等问题
+      const randomCardIndex = Math.floor(Math.random() * (tableData.value.length - 1))
+      const randomPersonIndex = Math.floor(Math.random() * (allPersonList.value.length - 1))
       if (luckyCardList.value.includes(randomCardIndex)) {
         continue
       }