The common causes of lymphatic blockage in the armpit of female patients are as follows: a. Mastopathy or mild acute mastitis can cause local lymphatic reflux obstruction, resulting in lymphatic vessel blockage, accompanied by local lymph node enlargement and painful symptoms. At this time, you can improve the blood circulation in the breast through acupressure and hot ointment package, and give anti-infection treatment appropriately, so that the symptoms of lymphatic blockage can be gradually relieved after the local inflammation subsides. Some patients with malignant tumor of breast and malignant tumor of lung can cause local lymphatic blockage because of the invasion of tumor cells to the lymphatic vessels in the axilla. In this case, patients can improve chest CT, breast ultrasound and magnetic resonance examination to clarify the specific location of the tumor and perform tumor resection and local lymph node dissection as soon as possible. After surgery, local radiotherapy and systemic chemotherapy can be given, and most patients can relieve the symptoms of axillary lymphatic blockage.