Knife and gun spurs on fingers refers to barbs on fingers, which may be related to physiological factors (e.g., environmental dryness, etc.), pathological factors (e.g., onychomycosis, etc.), etc., and need to be treated according to different etiologic factors. Common treatments include general treatment, medication and surgery. 1. Physiological factors: If it is caused by environmental dryness, you can soak your hands in warm water to make the surrounding skin soft, then disinfect the area, pull out or cut off the barbs with small tweezers or nail clippers, and then apply moisturizers to the area. 2. Disease factors: It may be caused by inguinitis or subnail abscess. Sensitive antibiotics such as penicillin or cephalosporin should be taken orally; if abscess has been formed, it needs to be cleaned up through incision and drainage; if the nail plate has been injured, it can be treated by nail extraction if necessary. It is recommended that patients with barbs on their fingers consult a doctor in a timely manner, and after a clear diagnosis, actively cooperate with the doctor to carry out the appropriate examination and treatment, and not to deal with it haphazardly.