Clinically, if there is pain at the edge of the big toe nail, we should consider whether there is paronychia. If there is paronychia, the patient feels pain at the edge of the toenail, accompanied by redness and heat pain. The pain is obvious when pressing, and the pain is aggravated when the patient walks with load. Severe cases may have inflammatory exudation. In this case, we should first consider symptomatic treatment, give anti-inflammatory treatment and change local dressings regularly. Iodophor diluent can also be disinfected and soaked, and then washed with salt water. At the same time, oral anti-inflammatory drugs should be taken. Diet, cold, greasy and other stimuli should not be eaten. If the big toe has pain caused by trauma, X-rays should also be taken to rule out the existence of fractures.