diff --git a/src/services/game.svr.ts b/src/services/game.svr.ts
index a81d244..edad4aa 100644
--- a/src/services/game.svr.ts
+++ b/src/services/game.svr.ts
@@ -8,7 +8,11 @@ const chestBonusItems = require('../../configs/chest_bonus_item.json')
 const chestLevelMap = new Map()
 
 let STEP_CHEST_LEVEL = chestCfg.chests.map((cfg: any) => cfg.probability)
-STEP_CHEST_LEVEL.sort((a: number, b: number) => a - b)
+STEP_CHEST_LEVEL = STEP_CHEST_LEVEL.sort((a: number, b: number) => a - b)
+for (let i = 1; i < STEP_CHEST_LEVEL.length; i++) {
+  STEP_CHEST_LEVEL[i] += STEP_CHEST_LEVEL[i - 1]
+}
+
 chestCfg.chests.forEach((cfg: any) => {
   chestLevelMap.set(cfg.level, cfg)
 })
@@ -51,14 +55,14 @@ export const generateNewChest = (uid: string, activity: string, level = 1, statu
 export const generateChestLevel = function (): number {
   const levelDefine = STEP_CHEST_LEVEL
   let randomLevel = Math.floor(Math.random() * levelDefine[levelDefine.length - 1])
-  let level = 1
+  let level = 0
   for (let i = 0; i < levelDefine.length; i++) {
     if (randomLevel < levelDefine[i]) {
-      level = i + 1
+      level = i
       break
     }
   }
-  return level
+  return levelDefine.length - level
 }
 /**
  * 生成步数奖励