1.The gradual swelling of the limb after the fracture, which generally reaches its peak 3~7 days after the injury and gradually subsides thereafter, is a normal phenomenon after the injury and can be disregarded. 2.After the limb is fixed, the unfixed parts should be moved frequently, such as shoulder joint, elbow joint, wrist joint, fingers, knee joint, ankle joint, toes, etc., which is not only good for preventing stiffness and restoring function, but also good for promoting blood circulation and making swelling subside. 3.After the fracture is fixed, the sagging of the limb is not conducive to swelling reduction, and even aggravates the swelling of the limb. Therefore, if the swelling is heavy, it is better to lie down and raise the injured limb with a pillow or bedding at least above the level of the heart, which is conducive to blood return to reduce edema. 4, limb swelling aggravated, can also be due to the cast or splint binding too tight, affecting blood circulation, if found that the wrist or dorsal foot vascular pulsation disappeared, the patient himself can no longer move the fingers or toes, hand touch or prick the fingers or toes with a needle, the patient has no feeling or feeling significantly dull, fingers or toes color pale and dark, the temperature of the opposite side of the decline or even cold, these phenomena, indicating that the limb has serious circulatory disorders The plaster must be removed immediately, the splint rope relaxed, and immediately to the local hospital for examination and treatment. After external fixation of the cast, daily care is very important, it is related to the success or failure of treatment. The following points should be noted: 1. Elevate the affected limb to facilitate the return of venous blood and lymphatic fluid to reduce the swelling of the limb. Normally, the upper limb should be suspended in front of the chest, and the lower limb should be padded with pillows to elevate the affected limb. 2.When lying on a hard bed, protect the cast with soft pads to avoid breaking the cast due to improper turning of the patient. 3, closely observe the peripheral blood circulation of the limb, pay attention to whether the color is purple, swollen, whether there is severe pain, whether the fingers (toes) are cold, numb, limited activity, etc.. If the above situation is found, the cast should be dissected immediately to avoid limb necrosis or ischemic contracture. 4.After the external fixation of the limb cast, it is necessary to help the patient turn over regularly, prevent bed sores, keep the cast dry, do not get water, and do not be soaked with feces and urine. Pay attention to keep warm in winter to prevent frostbite. 5.After the external fixation of the fracture cast, appropriate functional exercises should be carried out to facilitate the healing of the fracture. Such as the upper limb to do wrist extension and flexion activities; lower limb to do quadriceps contraction, ankle dorsiflexion, toe extension exercises.