The overall resistance of HIV to the external environment is weak because the external environment is different, and HIV survives for a slightly different amount of time in different external environments. If the temperature of HIV in the external environment is 56 ℃, 30 minutes to ensure inactivation. If it enters the body of the mosquito, because it is not suitable for reproduction survival conditions, it will lose the corresponding infection viability. HIV if the outside world contact with a virucidal agent, such as contact with more than 25% concentration of alcohol, can be killed immediately, 70% of the alcohol effect is the best, contact with sodium hypochlorite, formaldehyde and organic chlorine solution, but also completely inactivated. Therefore, the common application of disinfectants can completely inactivate HIV.