Hepatitis B virus is afraid of high temperature and can be killed at a temperature of 100°C for about 10min. But the hepatitis B virus is quite tenacious, which leads to the high rate of hepatitis B infection in China. The infection rate of hepatitis B in China is 60%, but the infection rate of hepatitis B and the carriers of hepatitis B virus are two different things. The probability of being a carrier of hepatitis B virus in China is around 7%. After being infected with hepatitis B virus, a completely normal state is a carrier of hepatitis B virus. So, it depends on the specific situation. Hepatitis B virus, resistant to acid, alkali, and also to low temperatures. In a low temperature environment, especially below -20℃, it can survive for more than two years. If in the normal environment, 20 ℃ – 30 ℃, can survive 1-2 months, so the hepatitis B virus is still very tenacious.