The lack of social security of migrant workers in China is an objective existence. There three causes of the situation. Firstly, the status of migrant workers is embarrassment, their occupation and identity （registered permanent） is dislocation. Secondly, they are treated specially caused by the exclusion of binary structure. Thirdly, it is difficult for them to pay premiums. They are the victims of the interest game. In order to change this situation, we must establish a sense of equality, cancel the existing registered permanent system. The...
