The pain will be significantly relieved a week after the foot fracture, and the emergence of more serious pain needs to find the cause, and patients are advised to go to the hospital for follow-up, the common causes include the following: a. Due to the pressure sore and injury caused by the plaster on the local skin, producing increased pain, the skin and subcutaneous tissue between the bone protrusion and the plaster, easy to suffer the two sides of the harder structure extrusion, local necrosis or injury, resulting in pain The pain may occur. Second, the loose fixation of the cast leads to relative displacement and friction of the fracture end, resulting in more severe pain. The most common cause of pain is the frequent movement of the patient to the ground during treatment, resulting in increased local swelling and pain. Patients are advised to go to the hospital for detailed diagnosis and treatment to eliminate unfavorable factors and promote the healing and repair of the fracture.