World Health Organization has proposed that palliative medicine should be applied early in the course of the malignant diseases. Regrettably, however, palliative care has been usually provided to patients with the advanced stage of cancer, as terminal care. Recently, palliative medicine begins at the time when patients are diagnosed with cancer. In response to changes in clinical settings of palliative medicine, anesthesiologists, with substantial experience in interdisciplinary pain management, can utilize their advantages in providing palliative medicine to cancer patients: 1) use of opioid analgesics; 2) considering the biopsychosocial model of pain; 3) helping patients live as actively as possible until death; and 4) helping the family cope with the patient's illness and their own bereavement.