AIDS is the abbreviation of AIDS, which is a systemic disease caused by human immunodeficiency virus (HIV) and can be transmitted through sexual intercourse, blood transmission and mother-to-child route. The incubation period of HIV in human body is 8-9 years on average, and during the incubation period, patients can live and work for many years without any symptoms. The patient will develop a variety of infections, such as enteritis, pneumonia and encephalitis caused by viruses, bacteria and fungi, and serious infections caused by various pathogens such as Candida and Pneumocystis. The transmission of AIDS is often associated with sexual misconduct, improper use of syringes, history of contact with AIDS patients, etc. A small number of patients with STDs can also be complicated by AIDS. Antiviral therapy is usually required and is often combined to avoid resistance to a single drug, with common drugs such as zidovudine, abacavir, and saquinavir. Targeted treatment is also required for patients with co-infections such as oral candidiasis, tuberculosis, and Pneumocystis carinii. Although there is no cure for AIDS, active and standardized treatment can help improve the quality of survival of patients.