Since the pilot projects of urban medical assistance system being carried out in 2005, it has optimized China's medical security system and social assistance system, promoted people's health and equality as well as social harmony, made it easier for the poor to get access to public health service, thus alleviated their economic burden caused by diseases. However, the medical assistance system is st ill short of fund and uses the fund in an ineffective way. In order to solve these problems, it is proposed in the paper to carry out the pilot projects in more areas, make greater effort to raise fund, optimize the assistance scheme and combine these pilot projects with community public health services.