It is generally believed that moderate exercise improves natural immunity and the enhanced natural immunity delays tumor growth, but the number and function of immune cells that are cytotoxic to virus-infected cells and tumor target cells are suppressed after prolonged, high-intensity exercise. Therefore, depleting exercise may increase the risk of developing tumors. This coincides with the theory of Sun Simiao, the ancient king of medicine, who advocated human exercise in the following way: “The way to nourish sex is to always want to make little effort, but not to be greatly fatigued, and to be strong enough not to be able to be.” That is to say, the degree of exercise to grasp, not because the exercise is good to exercise too much, more than their physical limits. Generally speaking, the best state for exercise is to sweat slightly and not feel tired. The following points should be noted in the exercise taken by tumor patients in the process of recovery: 1. According to the condition and physique of tumor patients, choose the appropriate exercise items, exercise intensity and exercise time, and try to focus on gentle exercise. 2. In the process of exercise, it should be especially noted that for patients suffering from different tumors, the consequences caused by the disease and treatment should be fully considered and treated differently. For example, lung cancer patients should strengthen the exercise of chest to improve respiratory function after lobectomy, and strengthen the activity of upper limbs after radical surgery of breast cancer. 3.The exercise of tumor patients should pay attention to the combination of whole body exercise and local exercise, so as to maximize the effect of rehabilitation medical treatment. Generally, whole-body exercise is the main focus. For patients with local amputation or cerebrovascular disease, they should also cooperate with corresponding local exercise and functional exercise. 4, step by step, gradually increase the amount of exercise. At the beginning of the exercise, the amount of exercise should be small, with the improvement of the patient’s body function, the amount of exercise can gradually increase. After reaching the proper intensity, it can be maintained at this level to adhere to the exercise. Sudden increase and unlimited increase of exercise should be prevented to avoid side effects. Especially for tumor patients who are bed-ridden for a long time, it usually takes a considerable period of time to recover the original physical activity. 5. Perseverance and long-term persistence. Exercise has a definite effect on the recovery of tumor, but it is not a one-day work, only long-term persistence can receive the expected effect. Bone metastasis patients should pay attention to the risk of fracture when exercising, and it is recommended to do proper exercise under the guidance of doctors.