HIV testing is free, but it is done at the local CDC rather than a hospital. The CDC is a public service institution organized by the government to implement national-level disease prevention and control and public health technical management and services. Usually, if you go to the hospital for HIV antibody test at your own expense, if the result is positive, the hospital also needs to send the blood sample to the local CDC for re-examination and confirmation. If a patient is diagnosed with HIV and has an indication for antiretroviral treatment, he or she will generally be registered with the CDC for easy management and follow-up monitoring. In addition, the CDC will issue free antiretroviral drugs and will provide patients with free CD4+ T-cell testing, as well as HIV count testing during follow-up treatment, and will regularly recheck liver and kidney function, blood count, amylase and other routine tests to monitor adverse drug reactions. However, AIDS is an incurable disease and there is no drug or medical means in the world that can completely remove the HIV virus or make it dormant. Therefore, in our daily life, we should pay attention to cut off the transmission route of AIDS, such as avoiding unclean sex, not sharing dental tools or razors with others, and having a physical examination before preparing for pregnancy to prevent widespread transmission of AIDS.