Physical disinfection method High-pressure steam sterilization method: using pressure steam sterilizer 103-137kPa, 121.3 ℃, 15-20 minutes, can achieve the effect of killing hepatitis virus. Boiling disinfection method: boiling at 100℃ for 1 minute can make hepatitis B virus inactive and infectious; boiling for 15-20 minutes can kill all types of hepatitis virus. Boiling disinfection method is the easiest and simplest disinfection method for every family. It is more suitable for disinfection of eating utensils, bath towels and clothes, and the leftovers of hepatitis patients can also be disinfected by this method and then discarded. Plastic products, synthetic fibers and fur products cannot be disinfected by this method. The autoclaving method can kill viruses, bacteria and budding pathogens and is thorough. Wang Wei, Department of Spleen, Gastrointestinal, Liver and Gallbladder Diseases, The First Affiliated Hospital of Henan College of Traditional Chinese Medicine Sunlight Exposure Method: This method is directly applied to all items that cannot be steamed, and it is generally appropriate to expose them to sunlight for more than 6 hours. Incineration method: miscellaneous items contaminated or discarded by patients, such as disposable medical supplies and garbage (including menstrual paper and hand towels) should be incinerated to achieve the purpose of thorough disinfection. Chemical disinfection method Toilets, toilets, garbage: 3% bleach or 2% sodium hypochlorite disinfectant can be used for spraying and disinfection, and stools should be soaked for 1 hour. The floor of the house, doors, windows, furniture, toys, delivery tools, etc. can be disinfected by spraying or scrubbing with peroxyacetic acid (also known as peracetic acid) at a concentration of 0.2% to 0.5% and fumigated airtight for 30 minutes after spraying at a dosage of 0.75 to 1g per cubic meter. It can also be used for disinfection of living rooms and surfaces of exposed objects and air. The hands of the patient’s family members can be soaked in 0.2% peroxyacetic acid for 2 minutes, or rinsed several times with soap and running water. Clothes, bedding, books, newspapers, laboratory sheets, medical records, and RMB can be fumigated with formaldehyde solution at 100 ml per cubic meter for 12 to 24 hours. The use of common commercially available disinfectants. Youanjing (decontamination), Foodware 333, 84 hepatitis decontamination solution are actually chlorine-containing disinfectants, which can be used according to the instructions for reference. Scientific tests have proven that Neosporin (standard drug name: benzalkonium bromide) and chlorhexidine (standard drug name: chlorhexidine) are not yet effective in disinfecting hepatitis B virus; dimethoate, lysol, carbolic acid (standard drug name: phenol) and fumigated vinegar have no effect on hepatitis B virus.