Cloud computing is a new Internet application model. The ultimate goal is to provide computing, services andapplications as a public facilities to the public, so that people can easily use the computer resources, while cloudcomputing as a new IT implementation of the way, is a profound impact on the development and transformation of IT.Cloud computing can provide enterprises with enterprise management key software, eff ectively reduce IT hardware andsoftware costs and maintenance costs, to adapt to the needs of enterprises in diff erent stages of development. But alsoto help small and medium enterprises to make it less IT investment, access to more professional, more comprehensiveIT solutions. With the rapid development of information industry, all walks of life have to speed up the information,the pace of digital, regional medical and health industry is no exception. China has long been concerned about themedical and health industry information construction, the new medical reform program is the release of the domesticregional medical information construction to a climax. Cloud computing as a cutting-edge technology of today's globalIT, its technology and philosophy to change the traditional computing resources application model, is to bring greatchanges in enterprise IT applications, it is particularly important in the role of regional medical information, with avery large Signifi cance. In this paper, the application of cloud computing in medical fi eld has been studied, and thedevelopment situation of cloud computing in medical fi eld at home and abroad is analyzed in detail. The new situationand the new situation of regional medical and health cloud will be put forward and forecast the development of cloudcomputing in medical fi eld prospect. In addition, we summarize the advantages of cloud computing to regional healthsystems, identify problems that exist in the development, present the risks and challenges it may bring, and put forwardcountermeasures against these problems and risks.