Patients may not necessarily develop the disease five years after infection because the incubation period of AIDS is very long, averaging about nine years, with the longest period reaching more than ten years, and the shortest period usually being a few months. If a patient is still in the incubation period five years after being infected with HIV, he or she may not have any obvious symptoms at that time. Although the virus has continued to replicate in the body, the immune function has not declined to a very low level, so there is no secondary opportunistic infection, so it has not yet attacked. Although the patient has not yet had an attack, once the diagnosis of infection is confirmed, treatment should be carried out as soon as possible, through the use of antiviral drugs can inhibit the replication of the virus in the body, so that the patient’s immune function is gradually restored, so that the patient will not enter the stage of AIDS, and AIDS will not have an attack, so that the patient’s life span can be prolonged and the quality of life can be improved.