Taking AIDS blocking drugs does not affect the window period of AIDS, which is basically the same as that of ordinary people, ranging from three weeks to six months. Because the window period of AIDS refers to the period of time when the patient is infected with AIDS, but cannot be detected clinically. Even if the oral HIV blocking drugs still have the risk of infection, such patients still have a window period, and if the detection methods are relatively backward, and even some of the incubation period will reach about half a year. But now with the development of science and technology, the development of detection methods appeared three generations, four generations of detection methods, greatly shortening the window period range, if the four generations of negative test 3 weeks can be ruled out. Therefore, after taking oral HIV blocking drugs, it is recommended to test the HIV antibody once a month, three months or even half a year, if they are negative, the possibility of HIV infection can be ruled out.