jia1 = [{ x: [1, 2, 3, 4], y: [11, 22, 33, 44] }, { x: [9, 8, 37, 16], y: [99, 88, 23, 13] }, { x: [6, 3, 1, 6], y: [3, 1, 8, 9] }] let numMap = {1: 'one', 2: 'two', 3: 'three'}; jia1.map((item, index) => ({name: numMap[index + 1], data: item.x.map((n, i) => [n, item.y[i]])}))