The statement that physical therapy cannot be done on the affected arm after breast surgery is false and has no scientific basis. In the past, breast surgery usually involves the removal of the pectoralis major muscle, pectoralis minor muscle, the entire breast, and several groups of lymph nodes in the armpit, and the removal of the pectoralis minor and pectoralis major muscles, which usually affects the activities of the affected body, but some of them are not able to improve the survival rate after surgery if the scope of the surgery is expanded. Therefore, most of the surgeries nowadays do not remove the pectoralis minor and pectoralis major muscles, so it will not affect the activity of the affected limbs, and the postoperative physical therapy can be carried out, which has a certain auxiliary effect on the disease. However, physical therapy should be carried out under the guidance of a doctor. After mastectomy, you should pay attention to appropriate rest, regular review, to prevent further aggravation of the condition, in addition to do a good job of local care, so as to avoid the occurrence of inflammation. If there is any discomfort, consult a doctor in time.