Abstract: Faced with the challenges of high medical costs,unreasonable distribution of much needed medical resources,the aging society and the low national health quality,Hierarchical Diagnosis System and Community Health Service will be still the main direction and focus of health care reform in China.As a new form of Community Health Service,Hospital at Home,which chooses suitable patients to be treated at home,not only relieve the difficulty to be in large general hospital,but also takes economical and convenient health service to the residents,and improves the surroundings of medication.It is well assessed by people.However,due to the short duration and the lack of service institutions or experience,the problems of Hospital at Home have been emerged onto surface,which also limit the effect and further development of itself.In order to push to formulate an advance Hospital at Home Management Practice accommodating to the situation of China,and perfect the institutions of Hierarchical Diagnosis System and Community Health Service,this article analyses four legal problems in Hospital at Home,including the conflict between stuff and law,the legal risk,the legal authority of protocol and the funding guarantees.Meanwhile,the appropriate measures are suggested,such as multi-site physician practice,the risk control of legal responsibility,the protection of medical stuff’s legal rights and expanding the level of medical insurance.In the end,we draw a conclusion that the sustainable development of Hospital at Home needs to be supported by laws and regulations.