Finger nail splints can cause the nail root to bulge due to localized bleeding and swelling, potentially causing the entire nail cap to fall off. When the finger is suddenly pinched, the vein lumen is narrowed or even occluded due to the sudden compression of the vein, and the return of blood is impeded, resulting in localized bruising of the finger tissues and swelling of the nail root. When the patient’s hand is suddenly pinched, the emergency treatment is to use another hand to smash the root of the finger blood vessels location pinch, adhere to five minutes or so, to reduce internal bleeding and thus can reduce the degree of swelling. You can also soak the finger in ice water, or ice packs, but note that the time should not be too long, so as not to cause frostbite. Patients can combine hot compresses at the same time two days after the injury, will be more conducive to recovery. It is recommended that if the patient’s finger is pinched bleeding more than, and accompanied by serious mobility disorders, need to immediately seek medical attention, follow the doctor’s instructions for treatment, so as not to delay the condition.