Breast cancer patients can have shoulder soreness, swelling and pain. Most of breast cancer patients have bone metastasis in the late stage, and if the site of bone metastasis is in the shoulder and upper limb, it will cause pain in the corresponding area, and the patients may have symptoms such as localized pressure and pain, weakness in lifting upper limb, and limitation of shoulder movement. Once shoulder pain occurs in the late stage of breast cancer, patients should consult the doctor in time to improve the examination and clarify the cause of the disease. There is another situation, after breast cancer surgery, lymphatic reflux obstruction leads to swelling of upper limbs, which can also lead to shoulder discomfort. Through the examination except organic lesions, such as bone metastasis, lymph node metastasis, and then need to do ultrasonography, except blood clots, etc., no contraindication can do physical therapy rehabilitation training, reduce edema, reduce pain.