When the nail is too long and penetrates into the flesh, if the wound is shallow, you can pry out the nail and cut it off to reduce the inflammation, if the wound is deeper, it is recommended to consult a doctor. To disinfect the wound, use alcohol or povidone-iodine. After disinfection, you can apply antibiotic ointment, such as erythromycin ointment or fusidic acid cream, and oral cephalosporin or roxithromycin capsules, and if necessary, surgery. Pay attention to the local skin can be normal ventilation, the wound do not touch water, to avoid secondary infection. If there is redness, swelling and pus, it is recommended to go to the hospital in time for sterilization treatment. Suggest timely correction of nail deformity, pay attention to hygiene, do not drink, smoking, do not eat spicy stimulating food during the wound healing period.