Objective To understand the performance of the basic medical security system in Guangxi for decision-making support on the development planning of the system during the 12th FiveYear Plan in Guangxi.Methods Descriptive statistics were made to analyze the annual report data of Guangxi's basic medical security system during 2009 to 2011,regarding the basic medical security for urban workers and that for urban residents,as well as those of the new rural cooperative medical system.Results The survey found that the three basic medical security systems in Guangxi have almost achieved full coverage; the compensation ratio keeps rising as the inpatient expenses of urban residents was up to 62.21%,64.96% and 66.96% respectively from 2009 to 2011,and that for urban residents up to 34.26%,39.96% and 49.68% respectively; the ratio for those covered by the new rural cooperative medical system has been maintained at 45% for the three years; the coverage of the systems keeps expanding.Conclusion Recommend to integrate pilots of the three security systems and carry out serious diseases pilot programs; encourage reform of the payment system at institutions at or above county level; reform the risk-pooling of disease management of at primary medical institutions; strengthen the information systems of basic medical insurance system,in an effort to ensure the sound development of the basic medical insurance system. Key words: Guangxi; Basic medical insurance system; Basic medical security for urban workers; Basic medical security for urban residents; New rural cooperative medical system