Abstract: The migrant workers of new generation have become the subject of migrant workers. As an important force in the socialist economicconstruction, with the times characteristic of leaving hometown and land features, and with the group characteristic of double status, urbanelife style, marginalized status. The current social security of migrant workers in China needs improving, migrant workers social insuranceare faced with low coverage, financial troubles, difficulties of fund accounting, system dilemma of transfer and connection, the imperfectionconstruction of social security information platform, etc. Establishing and perfecting the social security system of migrant workers need tofollow the principle of contemporaneity, fairness, multilevel, systematization, progressivity, need to constantly perfect social securityregulations, increase the rate of joining insurance, solve financial difficulties, implement personal accounts, national accounting, and improve the information management of migrant workers social security.