But the implementation is difficult, approbation is low, and transplants duality structure of the town and country to city, which disobeys the development trend of labor force in the market.

• 本文认为与其重建一套制度，不如在改革城镇保险制度的基础上，分层、分类直接把农民工吸纳进入城镇保障体系，不但可以解决农民工社会保障，而且有利于城市化进程，有利于社会保障制度的健康发展。