After breast cancer surgery, the cause of ipsilateral upper extremity lymphedema may be related to axillary lymph node dissection, obstruction of lymphatic return and the surgical approach chosen. The incidence of lymphedema after breast cancer surgery ranges from 10-60%. For severe upper limb edema, patients often have to endure the pain of abnormal appearance, upper limb dysfunction and even disability caused by this disease for life. In the past, radiation therapy was often considered a common cause of triggering or aggravating lymphedema. Nowadays, the surgical approach for early stage patients is based on breast-conserving surgery as much as possible, and the axilla is not routinely irradiated during radiotherapy, which has significantly reduced the incidence of upper extremity edema. In daily life, patients should frequently observe whether there is slight edema in the upper limbs or chest, and once it appears, they should promptly tell the doctor, elevate the affected limbs frequently to avoid prolonged drooping, massage moderately, and avoid carrying heavy things. After observing a large number of patients in the clinic and summing up certain clinical experience, according to the degree of edema, upper limb edema is divided into mild, moderate and severe. For mild edema that appears in a short period of time, patients can basically be completely relieved by taking oral Chinese medicine based on Huangqi Guizhi Wuwu Tang; for moderate edema, symptoms can be significantly reduced; for severe edema, it is difficult to be cured because it has been relatively long, Chinese medicine can partially For severe swelling, because it is longer, it is difficult to be cured, Chinese herbal medicine can partially reduce the symptoms, and combined with physical therapy, the swelling can generally no longer be aggravated. For refractory swelling that affects the patient’s quality of life, surgery can be used with more satisfactory results. For patients after breast cancer surgery, the most important point to be reminded is that they must pay attention to their life, and more importantly, they should seek medical consultation in time when problems are detected.