It is not recommended to sprinkle anti-inflammatory drugs on the wound because knife wounds are open wounds, which need to be debrided first, and then according to the severity of the wound to do the corresponding treatment and medication. Cleansing is a very important part of the wound, usually under the guidance of the doctor with saline, hydrogen peroxide, povidone-iodine and so on to do cleaning and disinfection of the wound. Applying or spraying anti-inflammatory medication on the wound will result in leaving a foreign body in the wound and increase the risk of infection. If the wound is a minor cut, local disinfection and sterilization of the wound can be used as a band-aid, and anti-inflammatory drugs can be dispensed with. If the wound is large, in addition to cleaning and disinfecting the wound may also need to carry out wound closure, postoperative wound covered with alcohol gauze or povidone-iodine gauze after bandaging, regular dressing changes, removal of stitches processing, and do not need to use anti-inflammatory drugs externally. If the wound appears more serious contamination, you also need to take cefradine, amoxicillin and other antibiotics to prevent infection after wound treatment, and tetanus antitoxin injection to prevent tetanus.