Wound Plaster is a long tape with medicated gauze in the middle, which is used to stick to the wound to protect the wound, stop bleeding temporarily, resist bacterial regeneration, and prevent re-damage of the wound. It is the most commonly used emergency medical supplies in hospitals, clinics and families. Wound Plaster, commonly known as sterilizing elastic bandage, is one of the most commonly used first aid medical supplies in people's lives. Band-aids are mainly composed of plain cloth tape and absorbent pads. It has hemostasis and creative use. According to different needs, there are now various shapes of band-aids for patients to use.