The significance of functional exercise after breast cancer surgery is to reduce the incidence of lymphedema and promote the increase of shoulder mobility. The duration of functional exercise after breast cancer surgery should last for more than 6 months, especially the first 3 months are especially important. If the functional exercise of the affected limb is not carried out after surgery, the contraction of scar tissue will affect the movement of shoulder joint, and when the scar tissue is already in a more stable state, even if the exercise is carried out again, the effect will not be ideal. Exercise should be done gradually and persistently, not in a hasty manner. You should insist on it every day for six months after the operation, and you are required to resume the shoulder movement basically within 1-2 months after the operation, and reach the degree of lifting freely. Finger climbing: At first, you can use the palm of the healthy side to hold the affected elbow and slowly lift it up until the elbow joint is level with the shoulder. Hair combing: The affected side palm can reach the opposite auricle through the top of the head or the back of the neck and do hair combing. Start with the head in a low position and gradually raise the head and chest.