To check whether there is HIV infection, the method is to carry out AIDS antibody screening, and if necessary, antigen and viral nucleic acid examination, to clarify whether there is HIV infection. AIDS is a chronic infectious disease caused by human immunodeficiency virus infection, after infection with HIV, it will cause a progressive decline in the immune function of the body, and finally immune failure, leading to a variety of opportunistic infections and the occurrence of tumors. The danger of HIV is relatively large, but currently through active treatment most patients can be stabilized for a long time. If high-risk exposure behavior occurs, pay attention to observe their own special clinical changes, if necessary, need to carry out relevant auxiliary examination, clear HIV infection, the human body infected with HIV to the production of antibodies, it takes a certain amount of time, an average of about 1-3 months (window period), so if there is a high-risk behavior, the test must be after the window period.