There is a long asymptomatic period after HIV infection, also known as the incubation period, with an average incubation period of 10 years, ranging from 2-3 years to 8-10 years. During the incubation period, HIV-infected patients will not have obvious symptoms of discomfort, feel good health, and their lives will not be affected in any way. At this time, the immune function of the body is still in a relatively normal state, and the lymphocytes are obviously declining, so life will not be affected, and there is no obvious discomfort. After 8-10 years, AIDS will enter the pathogenic stage, which shows an increase in opportunistic infections, causing tuberculosis, pneumonia, intestinal infections, giant cell infections, herpes, and also lymphoma, Kaposi’s sarcoma and other tumors.