每天不断自我拉扯：let map = new Map(); arr.map((item)=>{ if(!map.has(item.name)){ map.set(item.name,item.money); }else{ let tmp = map.get(item.name); map.set(item.name,tmp+item.money); } }) arr = []; let keys = Array.from(map.keys()); keys.map((item)=>{ let key = item; let value = map.get(key); let newobj = {'name':key,'money':value}; arr.push(newobj); }) console.log(arr);