Most people with HIV have no symptoms within a week of infection. Initial symptoms appear about 2 to 4 weeks after HIV infection, and there may be an incubation period of 6 to 8 years without noticeable symptoms. AIDS is an infectious disease caused by infection with the human immunodeficiency virus. The most common initial symptom is fever, which may be accompanied by headache, fatigue, nausea, vomiting, sore throat, muscle and joint pain. These symptoms usually resolve gradually on their own. Early symptoms of HIV infection are not specific, when the patient has high-risk behavior and uncomfortable symptoms, it is recommended to go to a regular hospital in a timely manner, improve the viral nucleic acid and antibody tests, early diagnosis and early treatment under the guidance of the doctor, so as to avoid delaying the condition and missing the time for treatment.