In daily life, when the skin or mucous membrane of a certain part of an HIV-infected person is damaged, infected or ulcerated, HIV will spread out of the body along with blood, secretions or exudates. HIV infection can occur in healthy people who have damaged, infected, or ulcerated skin or mucous membranes, and are exposed to HIV-containing blood or secretions. After the HIV virus leaves the human body, it has a very weak ability to survive in the outside world and will die quickly when exposed to sunlight or air. Therefore, people will not be infected through normal interactions and contact with AIDS patients, such as talking, riding in cars, taking boats, going to work together, eating, going to the toilet, etc. Although you can't be indifferent, you can't be too nervous to avoid hurting the patient's feelings. First, pay attention to whether there are any skin lesions, cracks, ulcers, eczema and other skin diseases on the individual and AIDS patients. If so, it is best not to shake hands or hug the AIDS patients, otherwise there is a risk of infection. Secondly, tools used by AIDS patients, such as dental tools, razors, hairdressing tools, beauty tools, injection needles, toilets, and swimming with AIDS patients are all dangerous and should be avoided.