HIV can generally be categorized into acute, asymptomatic, and AIDS stages, each with different symptoms. Common symptoms include fever, vomiting, diarrhea, cough and mouth ulcers. 1. Acute stage: Patients may experience fever, general malaise, nausea, vomiting, myalgia, enlarged lymph nodes and other symptoms within one month after HIV infection. 2. Asymptomatic period: The asymptomatic period can last for 6-8 years. There are no obvious symptoms during this period, but HIV keeps replicating in the infected person’s body, which can damage the immune system. 3. AIDS period: the immune system of the patient has been seriously damaged during this period, at this time the patient may have fever, diarrhea, night sweats, weight loss and other symptoms that last for more than 1 month, in addition to this, it may also be combined with a variety of opportunistic infections and tumors, which show the symptoms of the corresponding diseases. If the patient has risky behavior recently, he needs to go to the hospital in time and actively cooperate with the doctor for treatment.