A slightly displaced fracture of the lower end of the left fibula can be treated conservatively if the fracture is not serious, there is no significant vascular or neurological damage, and there is no joint surface damage, while a serious fracture can also be treated surgically. A slightly displaced fracture of the lower end of the fibula can be treated conservatively if the fracture is minor and there is no joint surface damage. The main method of conservative treatment is external fixation with plaster, or support, and the external fixation needs to be fixed for 6~8 weeks. When fixing, we should pay attention to the tightness of the cast to avoid soft tissue damage caused by too tight, too loose to achieve the effect of fixation. If the fracture is serious, there is damage to the joint surface, there are important neurovascular damage, etc., then surgical treatment is needed. The noted ways of surgical treatment are incisional reduction screw, or plate internal fixation. After surgical treatment, rehabilitation exercises are also required to prevent ankle stiffness.