Recently, robots and artificial intelligence have once again become hot topics, especially in the era of large population and the disappearance of dividends. With the strengthening of environmental protection consciousness and the increase of production cost of many enterprises, the trend of "machine replacing human" is promoted. The use of robots is also an inevitable choice for the adjustment and upgrading of China's industrial institutions. But will large-scale machine replacement bring large-scale unemployment? How can we maximize the benefits?