HIV survives on human skin for a very short period of time, usually less than 10 minutes. After being removed from its host, HIV generally survives on dry, unbroken skin for no more than 10 minutes, and even less if it is sterilized. HIV cannot be transmitted if the skin of the contact person is not visibly broken. Therefore, even if HIV is present on the skin, there is no risk of infection. The main ways of HIV transmission are sexual, blood and mother-to-child transmission. Shaking hands with an HIV patient, eating together, sharing a toilet or even kissing in normal life will not cause HIV transmission. If the patient has recently had high-risk behavior, they should promptly go to the nearest local hospital to take timely blocking measures and improve the examination, a clear diagnosis.