AIDS is a serious public health and social problems in the world.At present,no effective treatment,the key is to prevent.Liangshan is China＇s AIDS incidence area,high school and college students are high-risk populations of AIDS.This paper,through the investigation of knowledge,attitude,behavior about AIDS among high school and college students in Liangshan Prefecture,finds the existing problems,puts forward the improvement measures and provides the basis and guidance for further health education activities of AIDS prevention and control in Liangshan schools.