Health net is a kind of net provide health information for vast cyber citizens free of charge. The users of health net are between the health and sub-health people. And sub-health is in the intermediate state of disease and health. Healthy information is to provide the most professional and sophisticated healthcare information service, including disease, health protection, health news, gynaecology and so on. Recent years, with the establishment of hospital site all over the country, nosocomial web portals alsobulge in health net. on the internet, there are platform for doctors to communicate with patients which is convenient for both sides. Along with the pollution of environment, a great number of people are easy to cause diseases. Their immunity is lowered. See from the prospect of the development of the health net is optimistic. Thanks to the enhanced health awareness of the residents, the improvement of interconnection network and the promotion of risk investment cost. And the industry of health net will achieve double growth in near future.