Abstract: In the 21st century, network technology and mobile communication technology arc gradually entering the health services field. hhe combination of body area network, broadband mobile communications and cloud computing makes medical applications for a large population possible. The development of digital medical technology, especially tclemedicine,incrcasingly turns out to be an important method to significantly reduce the costs of health and medical treatment, change the uneven allocation of medical resources, and improve the health care as a whole. There are a lot of researches about body area network technology, cloud computing storage technology, system of health assessment, tclemedicine and home-care model at home and abroad, which put forward a number of innovative theories and models.However, there arc still many problems and difficulties. In digitalized medical applications that combines information technology and medical care,it becomes a vital strategy and development trend of medical reform in many countries to integrate body area network, cloud computing and other advanced information technologies in order to address the exiszing problems in applications one by one, and to innovatively establish collection and transmission of personal health information, the automation of health information processing and remote operation of health management. In this way, we can provide telemedicine service "timely" "appropriately" with "no boundaries"，and improve the level of health and medical care and the duality of people's life. This paper provided a general review and outlook of the development in this area and made an analysis of typical solutions and application cases in this area.

Key words: Body area network, Cloud computing, Cloud platform, Telemedicine