Nail smashed should promptly seek medical treatment, by the doctor through cleaning the wound, hot and cold compresses, medication and other ways to deal with. 1. Clean the wound: after the nail is smashed, if there is bruising, high tension and obvious pain, you can be treated under local anesthesia by removing part of the injured nail to avoid damage to the nail bed. Attention to cleanliness during the operation, need aseptic operation. Regular postoperative dressing change treatment. 2. Hot and cold compresses: the nail was smashed after the reduction of symptoms within 24 hours of the wound can be cold compresses to prevent further aggravation of bleeding. More than 24 hours after the injury, can be appropriate for hot compresses to promote the absorption of bruises, improve the pain and swelling of the situation. 3. Drugs: After the nail is smashed, if the pain is obvious, you can take painkillers under the guidance of a doctor, such as ibuprofen capsules, diclofenac sodium extended-release tablets and other drugs to ease the pain; you also need to take amoxicillin, cefaclor and other antibiotics to prevent and treat infections. If there is any discomfort, it is recommended to go to the hospital in time to improve the relevant examination, to exclude the possibility of fracture, to avoid delaying the condition, resulting in other damage.