Abstract: Based on the game theory， the relationship between the government， enterprises and migrant workers was analyzed from the main body of basic medical insurance premium paid by the three parties to maximize the interests. The research showed that the design and management issues of basic medical insurance system become a major factor that affects the interests of the three parties in migrant workers' basic medical insurance transfer and continuation. Furthermore， the interest game among the local governments is one of the most important reasons for the difficulty of migrant workers' basic medical insurance transfer. The findings suggested that the basic medical insurance level should be improved， the interest relationship among the local governments should be streamlined， the supervision of enterprises should be strengthened， the insurance awareness of migrant workers should be raised， the insurers should be persuaded into basic medical insurance so as to gradually achieve the smooth relationship transfer of migrant workers' basic medical insurance.

Key words: migrant worker, basic medical insurance, game analysis