Abstract: The mobile devices are usually limited in its computing cabability,storage capacity,network bandwidth and battery life．Existing cloud services are not optimized for those features of the mobile devices．As a result,the quality of the mobile devices to access cloud services is seriously reduced．Aiming at this problem,a data transmission format optimization model and a servics mashup model were presented for mobile devices．And a framework of mobile cloud ser-vices access based on proxy was designed and implemented,which enables mobile devices to access cloud services through a proxy server．Under four different situations,the request response time,response process time,bandwidth flow and energy consumption of the mobile devices were tested．The test result shows that this framework has some practical significance.

Key words: Mobile computing,Proxy,Cloud service,Service mashup