China started to pay more attention to the construction of a regional and national health information network after the outbreak of the severe acute respiratory syndrome (SARS) epidemic in 2003.The construction of a public health system is considered the most important part of national medical reform,with information and computer technology serving as the key to deploying regional collaborative medical service,also known as e-health.In this paper,we analyze the difficulties in carrying out e-health projects in China,a discussion of ongoing projects,and a case presentation representing current progress.