When local pain occurs after the knife treatment, it is necessary to observe whether there is redness and swelling, if there is redness and swelling, you need to pay attention to cleaning and disinfection, and if necessary, carry out anti-infection treatment, otherwise you can just use painkilling drugs to treat. If you find redness and swelling at the site of the knife, and the pain is more obvious when you press on it, you should first consider whether there is an infection. After the timely clarification of the necessary antibiotic infusion treatment to control infection, in addition to local hot compresses or infrared physical therapy to promote the absorption of inflammation. Of course, small needle knife treatment after a slight pain is normal, the needle hole site is best not to see water in three days, to ensure that the needle puncture site skin clean and dry, otherwise it will cause infection, not conducive to the recovery of the wound.