Surveillance on brucellosis was carried out in 15 major monitoring places in 14 provinces from 1990 to 1996. The result indicated that in a few monitoring places the epidemic situation was stable but in many monitoring places outbreak had occurred in one or two monitoring places. Major source of infection was from infected sheep and cattle while in some old epidemic areas the pastoral area was active, which kept animals continuously excrete bacteria, making the potential of outbreak brucellosis exist. A tendency showed that the epidemic area was shifting to the farming and stockbreeding and agricultural areas. A comprehensive strategy including effective management and control the circulation of causative agent, needs to be developed.