The bones, muscles and ligaments are collectively referred to as the locomotor organs. After a fracture, the patient often has a combination of muscle and ligament injuries. In addition, during surgery, the fracture end is exposed through the muscle gap and then fixed, so adhesions of the muscles and ligaments and other soft tissues are bound to occur after surgery. The treatment of fracture is not simply fracture healing, but functional rehabilitation is the ultimate goal of treatment, therefore, it is said that the goodness of fracture treatment cannot be evaluated by fracture healing alone, but most importantly, it depends on the functional recovery of the patient. It is important to emphasize here that functional rehabilitation is not only a matter for doctors and nurses, but also requires the cooperation of the patient, and that functional exercises should be carried out painstakingly and gradually under the premise of strict compliance with medical advice. Any speculative approach is not available, and likewise, excessive exercise is a desire for speed, and sometimes can be botched. As for when to start functional exercise, the advances in modern internal and external fixation techniques have made the fracture fixation stronger, but this does not mean that it is possible to start prematurely to increase the intensity of functional exercise indefinitely. It is generally accepted that patients should begin muscle contraction training as early as possible after surgery so that muscle atrophy can be prevented and minimized to prepare for the next step of rehabilitation. Generally speaking, muscle contraction exercises for post-surgical patients need to be continued throughout the functional training. The second step is to start functional exercises about a week after surgery, depending on the fracture site and the fixation method. This exercise is sometimes very painful and requires a lot of perseverance, and it needs to be done strictly according to medical advice, because excessive exercise may cause a serious surgical complication around the joint: heterotopic ossification, which may lead to a complete loss of joint function. The third step is that after the doctor judges that the partial weight-bearing exercise of the limb can be started, the patient needs to gradually start the limb, especially the lower limb crutch exercise. Here I think that for patients with lower limb fractures, the weight-bearing of the affected limb should be gradually increased from standing until the injured limb can fully bear all the body weight, and then start walking training, so that a more correct gait can be achieved from the beginning. Therefore, good communication and cooperation between doctors and patients is the prerequisite for patients to safely spend the post-operative rehabilitation period, and good functional exercise is necessary for functional recovery after fracture surgery, so I hope that patients should bite the bullet and exercise hard under the guidance of doctors in order to recover as soon as possible after the injury. We wish our patients and friends a speedy recovery!