Check for nerve, blood vessel, and tendon injuries, and clear and close the wound. Medications that promote skin healing, minimize scarring and prevent bacterial infection can be used. Knife wounds are wounds caused by knives or other sharp instruments. The following medications can be used to treat a stab wound on the body: first, the wound should be sterilized with a drug such as hydrogen peroxide to prevent infection. Secondly, epidermal growth factors, moist burn creams or silver ions can be applied to promote wound healing. After applying the above medications, antibacterial ointment should also be used to prevent bacterial infection, such as erythromycin ointment, and can be combined with astringent wound, extracting the poison to promote wound healing, such as extracting the poison to promote myocardial ointment. It is recommended that if the wound is serious, the patient should go to the regular hospital for treatment, may need to clean or stop bleeding treatment, self-treatment may not only affect the recovery of the wound, but also may lead to the phenomenon of infection.