Post-breast cancer lymphedema mainly manifests as swelling of the upper extremities. Patients may notice thickening of the affected upper arm or forearm compared to the healthy side, which may develop very quickly. Distant upper limb edema can further worsen if not treated in time. If functional training of the upper extremity is performed in a timely, appropriate and accurate manner, it can slowly recover. The edema treatment device is a very good tool, which is a very small device with a cuff that can help lymphatic return. And the length of treatment can be decided according to the edema condition, helping patients to recover the function of the upper limbs after surgery, which is a rehabilitation treatment. It should be emphasized that postoperative lymphedema in breast cancer is not a disease, based on the anatomical structure of the axilla, early and late stage of the disease, there are more objective influences. With the improvement of breast cancer breast-conserving technology, edema is not a big problem, and upper limb problems can be avoided by paying good attention to protection. If you have lymphedema, please visit the hospital for further treatment and improvement of symptoms.