An early symptom of AIDS is swollen lymph nodes. However, the symptoms of AIDS patients in the acute stage vary, some of them are mild and not obvious, and AIDS fever is mostly low fever, so it is often easy to ignore. After HIV enters the human body, it reaches the local lymph nodes within 1-2 days, causing a rapid and transient decrease of lymphocytes in a short period of time, followed by viremia, leading to acute infection and early acute symptoms. At this point most patients will have symptoms such as swollen lymph nodes, fever, night sweats, and rash, but some individual patients will have mild or even no symptoms. The damage to the lymph nodes is continuous, and swollen lymph nodes are a necessary symptom even in the asymptomatic phase.