Breast cancer surgery may injure nerves and the arm usually returns to normal in about 6-12 months. Some patients have a longer recovery time or even permanently fail to recover. If breast cancer surgery injures the peripheral nerves or local lymphatic obstruction leads to arm swelling, etc., the arm activity is limited after surgery, which is manifested as the arm can not be extended or lifted, etc., the arm can be moved appropriately in one month or so, and it is important to pay attention to the amplitude of the activity should not be too large, to avoid over exertion, and carry out the rehabilitation exercise under the guidance of professional doctors, generally it can be restored to normal in 6-12 months or so. How long it takes for the arm to return to normal after breast cancer surgery is closely related to the severity of nerve damage and postoperative limb function exercise of the patient, which varies from person to person. Some patients have a longer recovery time, which may take several years. A few patients have more severe nerve damage and may not recover permanently. Once you have limited arm movement after breast cancer surgery, it is recommended that you go to the hospital as soon as possible for a review and take appropriate treatment measures in a timely manner.