1, pay attention to the blood circulation of the limb to observe: (1) pain increased; (2) numbness of the hands and feet, numbness is not reduced after the activity; (3) the injured limb of the fingers or toes activity is limited or activity triggered by severe pain; (5) hands and feet pale or purple; (6) the injured limb is cold, etc. indicates poor blood circulation in the limb, should immediately go to the hospital for review, a professional doctor to make treatment. 2.You cannot loosen the small splint privately to avoid fracture displacement or fracture refracture. 3.Prevent fracture re-displacement, protect the affected limb after injury to prevent fracture re-displacement due to external collision or other reasons. 4.Functional exercise: after the fracture is reset, you can do the functional exercise of the affected limb, such as the isometric contraction and diastole of the muscles, the movement of the adjacent joints, etc., and with various physical therapy to promote the disappearance of swelling and the healing of the fracture.