1. Rehabilitation must maintain good alignment of the fracture and promote fracture healing. Encourage activities that are conducive to fracture healing (e.g., making fracture ends closely together and interlocking); activities that are detrimental to fracture healing (e.g., making fracture ends into angles, rotation, separation) must be strictly controlled. 2. Rehabilitation should be started after fixation and be carried out throughout the whole treatment process, gradually, from small to large range of motion, from less to more times, from short to long, from weak to strong, and from fatigue to pain at the fracture site, until the function is restored. 3. Activities should be centered on restoring the physiological function of the limb. The upper limb should be trained around enhancing the grip strength of the hand, and the lower limb should be trained around restoring the ability to walk with weight. However, functional exercise should not interfere with the fixation of the fracture, and should not do activities that are not conducive to fracture healing, such as abduction of the upper limb for abductor humeral surgical neck fracture, internal rotation of the lower limb for adductor humeral surgical neck fracture, rotation of the forearm for ulnar radial stem fracture, and internal and external rotation of the lower limb for tibiofibular stem fracture. After entering the recovery period, it is important to accurately perform the movement of the impaired joint and not to replace it with the adjacent joint. It is necessary to restore the range of joint motion, amplitude and smoothness of joint movement first, to achieve no obstruction in joint movement, and then start to restore the quality of joint movement, such as with physiotherapy, and then carry out functional exercise after physiotherapy. 4, rehabilitation treatment should be carried out under the guidance of medical professionals, not violently and forcibly, while giving full play to the patient’s initiative and close cooperation between doctors and patients. When surgical treatment is used and a stable fixation is obtained, and external fixation measures such as plaster are no longer needed, functional training should generally be started several days after surgery, when the surgical pain is relieved. The advantage of surgery is that it provides the opportunity for early exercise to avoid fracture disease, thus maximizing the promotion of limb function early recovery. There are also some fractures that must be operated on, but cannot be fixed with a sufficiently stable internal fixation and still need to be supplemented with external fixation after surgery, so early exercise should also be performed depending on the specific situation. It can be seen that the general principle of fracture rehabilitation is to ensure internal and external fixation while emphasizing the word “early”.