Humerus fracture should be treated according to the different stages of fracture, and physiotherapy, occupational therapy and functional training should be carried out under the guidance of doctors. 1. Early rehabilitation training: Early humerus fracture should focus on protecting the affected limb, eliminating swelling and relieving pain. The affected limb should be elevated as much as possible, and make more fists and stretch fingers to promote blood circulation; the healthy limb should be practiced at shoulder and elbow joints as early as possible; if the pain is caused by the operation, non-steroidal anti-inflammatory drugs can be taken as prescribed by the doctor to relieve the pain, for example, ibuprofen; physical therapy such as pulsed electromagnetism and electrical stimulation is also available. 2. Mid-term rehabilitation training: If surgical treatment is carried out or external fixation is lifted, shoulder and elbow joint activities can be carried out under the guidance of the doctor, such as pendulum exercises, abduction, internal rotation, internal retraction, forward bending and lifting, etc., from passive activities to assisted activities, and then gradually transitioned to active activities. Upper limb weight-bearing exercises can be carried out gradually, and isometric contraction exercises should be the main exercise in the early stage. In the later stage, elastic bands and dumbbells can be used gradually to carry out resistance forward flexion and lifting, resistance internal rotation, and dumbbell prone resistance training. 3. Rehabilitation training in the later stage: after the fracture reaches the clinical healing standard, resistance training of all muscle groups can be carried out, and whole-body aerobic training can be carried out appropriately, so as to help to put into normal work and life as early as possible. In order to prevent stiffness of shoulder and elbow joints, it is recommended to train correctly under the rehabilitation program of the rehabilitator as early as possible.