In most cases, axillary lymphadenectomy is not very harmful. During the resection process, there may be some common complications, including axillary vein injury, damage to lymphatic ducts and routine surgical complications, as follows: 1. Axillary vein injury: the lymph nodes are very close to the axillary vein, and during the resection process, there is a possibility of damaging the axillary vein, as well as the axillary artery and axillary nerve; 2. Damage to lymphatic ducts: most importantly, the lymphatic ducts may be injured during the lymphatic resection In the process of lymphatic resection, the lymphatic ducts may be injured, which is called lymphatic fistula after surgery. The treatment of lymphatic fistula may be more troublesome, which is also a more serious hazard after lymphatic resection; 3, routine surgical complications: there are also some routine surgical complications, such as pain of local surgical incision, local fat liquefaction, poor wound healing, etc.; axillary lymph node dissection is a more common surgical procedure in clinical practice, usually seen in the surgical treatment of breast cancer or lymphatic metastasis of other cancers. It is usually seen in breast cancer surgery or lymphatic metastases from other cancers.