The clinical manifestations of localized bruising, swelling, pain, tenderness and percussion pain may occur after a fibular fracture. If there is no combined injury to the common peroneal nerve and surrounding large blood vessels, external fixation in plaster can be given after repositioning. The external fixation of the cast should include fixation of the knee and ankle joint with the toe exposed, review of the affected area after 2 weeks of fixation and X-ray after 6 weeks of fixation, and removal of the cast after the fracture end alignment and alignment are satisfactory. Since the tibia is not fractured, the affected lower limb still has weight-bearing function, and the patient can walk on his own and carry out functional exercise of lower limb muscle strength.