The average duration of asymptomatic HIV infection in adults is around 6-8 years. The length of time varies from person to person, and may be related to the amount of virus infected, the type of virus, the route of transmission, and immunization, as well as to the patient’s nutrition, hygiene, and living habits. The duration of the asymptomatic period is mainly due to the degree of HIV replication in the infected person’s body, the degree of damage to the immune system, with the continuous decline of CD4 lymphocytes, with a certain degree of decline, the infected person’s asymptomatic period will end, and enter the morbidity period. Therefore, the duration of the disease depends on whether the patient’s immune function reaches a certain condition and causes the onset of the disease. In fact, after entering the AIDS stage, the patient will develop a variety of secondary infections, at which time the CD4 cell count will be less than 200 cells/ul, and the viral load of HIV will be very high.