Fibula fracture displacement 3mm, need to be based on the severity of the fracture and the impact on the joint surface and other factors to decide, generally divided into conservative treatment and surgical treatment. 1. Conservative treatment: Generally, patients with mildly displaced proximal fibula fracture are given conservative treatment, and conservative treatment can also be given to elderly patients, patients who cannot tolerate surgery or who have little activity in their daily life. Conservative treatment usually takes bed rest, plaster or brace fixation for 8~10 weeks, get down to the ground from partial weight bearing to start rehabilitation training, usually about 3 months the fracture can be completely healed. 2. Surgical treatment: if the distal fibula fracture, most of them involve the ankle joint, for the ankle joint mild displacement can be treated conservatively, but it may cause the possibility of traumatic arthritis, for the higher requirements of the patient should be given to surgical treatment. In addition, severe comminuted fractures should be treated surgically. After the operation, we should pay attention to enhance the nutrition of the whole body, and actively carry out functional exercise under the guidance of the doctor. Fibula fracture displacement of 3 cm how to treat, most also need to be based on the specific location of the fracture, the degree of comminution and other factors to determine the decision, it is recommended to improve the examination in a timely manner, targeted treatment.