HIV can only be parasitized in human blood and will die soon after leaving the body, so the survival time of HIV outside the body may be around a few hours. HIV belongs to the RNA virus, the genetic material is single-stranded RNA, there is a protein coat on the outside of the RNA, and the outermost part is the viral envelope composed of proteins, lipids, and sugars. It can infect the human body through sexual transmission, mother-to-child transmission, and blood transmission, leading to acquired immunodeficiency syndrome. HIV can only be parasitized in human blood, leaving the human body is very easy to die, very sensitive to temperature, at 56 ℃ can only survive 30 minutes, the higher the temperature, the shorter the survival time. The higher the temperature, the shorter the survival time. Under normal temperature, it can only survive for a few hours. In addition 75% ethanol, 0.2% sodium hypochlorite, 0.3% hydrogen peroxide and other disinfectants can kill HIV. As long as the skin is intact and free of wounds, you will not be infected even if you come into contact with HIV. If there is a wound on the skin and exposure to HIV is suspected, one should go to the hospital promptly and block the treatment under the guidance of the doctor.