The asymptomatic phase of AIDS, in common parlance, is when the person is infected with HIV and has not yet developed the disease, and at this time the patient does not have any uncomfortable symptoms. The duration is about 6-10 years, with an average of about 9 years. For most patients, the disease will develop after the asymptomatic period, and they will enter the AIDS stage. Patients with AIDS will have clinical symptoms, the more common ones being weight loss, prolonged low-grade fever, chronic diarrhea, etc. Many AIDS patients are seen with opportunistic infections, such as lung infections, central nervous system infections, intestinal infections, and eye infections, which require treatment depending on the site of infection and the pathogenic bacteria.