Bandages are definitely not to be used as gauze, the reason is that bandages are bacterial, not a sterile environment, and the preservation environment is also stored at room temperature. In addition, there is no clear expiration date for bandages. If a patient has a wound that needs to be dressed, using the bandage as gauze can easily lead to infection of the patient’s wound, which is because the bandage is not sterile. Gauze is sterile, and it is sterilized by high temperature and pressure, and it is stored under vacuum. Disinfected gauze is valid for one week, more than a week need to be re-sterilized, the next time to use or just throw away, can ensure the sterility of the wound, to avoid bacterial infection.