With the continuous progress of medical technology, there are many surgical methods for the treatment of breast cancer. This article focuses on how to perform postoperative exercises on the affected upper limb for patients who have undergone axillary lymph node dissection. Although there are many exercise methods, all of them are similar; patients and their families search for them online, so we provide three main exercise methods here. The first method is simple and straightforward. 24 hours after surgery, move the wrist joint; 1~2 days after surgery, practice simple movements of finger extension and fist clenching; 2~3 days after surgery, practice elbow flexion and wrist flexion, forearm extension and flexion in sitting position; 3~5 days after surgery, touch the ipsilateral ear and ipsilateral shoulder with the hand of the affected limb; 5~7 days, practice shoulder lift, flexion shoulder lift to 90 degrees; 7~10 days, practice lifting the affected limb and perform ” After 10 days, practice “hoop” exercise several times a day. The second method: Exercise for upper limb function, guided by a specialist nurse. The third method: The functional exercise after breast cancer surgery is divided into bed resting period, bed activity period and late discharge period. Functional exercise during the bed-rest period: 1-3 days after surgery, mainly for the function of hand, wrist and elbow joints, such as finger extension, fist clenching and wrist flexion and elbow flexion. 2.Functional exercise during the bed activity period: the period from the time the patient starts to get out of bed to the time of discharge. The methods of exercise are: (1) 3-4 days after surgery, the patient can sit up and start flexing the elbow; (2) 5 days after surgery, after lifting the chest belt that fixes the patient’s upper limb, the patient can practice the action of palm touching the contralateral shoulder and the ipsilateral ear; (3) 9-10 days after surgery to remove the incision suture. At this time, the upper limb of the affected limb can be exercised to elevate the elbow joint of the affected side in flexion and place the palm of the hand on the contralateral shoulder. Initially, the palm of the affected side can be used to support the affected elbow, and gradually raise the affected upper limb until it is level with the shoulder; (4) 14 days after surgery, practice placing the palm of the affected side behind the neck, so that the affected side of the upper limb is gradually raised to the patient’s low head position since the beginning of the exercise, up to the head and chest position, and then can cross the top of the head with the palm of the affected side and touch the contralateral ear. In order to expand the range of motion of the shoulder joint, you can also do wall-holding exercises to strengthen the function of raising the upper limb on the affected side. 3.Exercise of upper limb function after discharge: After discharge, patients should continue to insist on the functional exercise of the affected limb: (1) upper limb rotation exercise: first, the upper limb of the affected limb should be naturally lowered, and the fingers should be straight and together. Gradually raise the affected limb from the front of the body to the highest point, and then gradually return to the original position from the outside of the body. Note that the upper limb should be straightened as much as possible when raised, avoid bending, the action should be consistent, and can also be exercised from the opposite direction; (2) upper limb back extension exercise: patients should keep their heads up and chest up. In addition, patients can also develop a variety of weight-bearing exercises in daily life lifting, pulling, lifting, lifting, objects, in order to enhance the affected upper limb; strength, so that its function is completely restored to normal. The above exercises require 1-3 times a day for 30 minutes each time. Note to avoid excessive fatigue, should be gradual, appropriate and stop. For patients with special conditions, the exercise time should be reduced or delayed as appropriate, but the exercises should not be stopped. Our experience: after surgery, patients should, by and large, use the above statement as a theoretical basis for reasonable functional exercise of the upper limbs. The purpose of functional exercise is to keep the upper limb function well, reduce edema, thrombosis and limitation of movement, but the early activity must not exceed the necessary limit, which will affect the healing of postoperative wound and inevitably cause new problems; 3. Due to the improvement of surgical techniques, most of the patients will have a good recovery of limb function after surgery; 5.