Angiosarcoma is rare clinically and is sometimes seen in patients with prolonged lymphedema. The disease is highly malignant, recurs and metastasizes quickly, so it is extremely difficult to cure. In view of the above, if found, enlarged resection should be performed as early as possible and can be supplemented with postoperative radiotherapy to minimize the recurrence rate after surgery, but even then about half of the patients still have local recurrence within a short period of time, or even systemic metastasis soon, with rapid tumor growth and consumption, the patient will soon show signs of cachexia and serious cases will die soon.