Children’s hands are swollen by the door clip is most common in the nail or finger end joints, the specific treatment is as follows: 1, the nail is pinched will cause blood under the nail, purulent dactylitis, interphalangeal hypertension, infection, bruises can not be discharged when it is recommended to pediatric orthopaedic emergency, do the under the nail to open the drainage or drilling drainage in the nail, to drain off the blood, the child’s pain, swelling will soon be better; 2, if the finger end joints are pinched and swollen, children will have pain, limited movement, it is necessary to alert the child may have a fracture of the fingertips. If the end of the finger is pinched and swollen, and the child’s activities will be painful and restricted, we should be alert to the possibility of fracture of the child’s fingertips, and we need to consult the pediatric orthopedics department to take a radiograph of the metacarpals. Fractures should be treated as early as possible, and can be cast or immobilized.