HIV, also known as human immunodeficiency virus, is a very dangerous virus that attacks the human immune system, targeting CD4 T-lymphocytes, the most important part of the human immune system, and destroying a large number of CD4 cells, causing the body to lose its immune function. After the loss of immune function, various opportunistic infections and tumors will appear. If the disease is not treated in a timely manner, the disease can reach the stage of death in about 2 years. However, AIDS is a disease that can be prevented and controlled. Standardized anti-HIV treatment is available for HIV infection, so that many patients can be stabilized in the long term.