Amoxicillin is not useful for topical wound dressing. In most cases, if the patient has a subcutaneous infection or folliculitis, etc., you can use an ointment with antibiotics on the surface for topical application, such as oxyfloxacin ointment or mupirocin ointment for topical application. If the patient has a wound, such as a post-surgical wound, or a wound cleared and sutured after a trauma, depending on the cleanliness of the wound. If it belongs to a clean wound, more antibiotic infusion is not needed, and amoxicillin is definitely not needed for topical application on the surface. If it is a clean and contaminated wound, if there is no redness, swelling, pain or inflammation on the surface of the wound, there is no need for antibiotic infusion or topical application of amoxicillin. If the wound is infected and there is pus flowing out, the sutures need to be removed, the drainage needs to be unblocked, and the pus needs to be completely drained to the outside, and then the inside of the wound needs to be filled with gauze to continue changing the medication. If antibiotics are needed, they need to be applied systemically, i.e. intravenous drip, not topically on the surface of the wound. This is because the local use of antibiotics may cause the bacteria inside the wound to become resistant, making it more difficult to change the wound and prolonging the healing time.