Background & Objective: Regardless of types of cancer, cancer pain means the pain occurred by tumor itself, caused by complication or side effects during treatment and which is neither directly related to tumor nor treatment. This case was performed to relieve the cancer pain and study the effect of moxibustion to the cancer pain. Method: For 27 days, the patient was treated by moxibustion($MANINA^{(R)}$), acupuncture, herbal medicine and narcotic analgesics. We planned to maintain moxibustion on 8 points of Bladder meridian line(BL13, BL17, BL42, BL43) for 20 minutes. The improvement of the symptom was evaluated by BPI/VAS, and the amount of narcotic analgesics applied. Results: The BPI/VAS was declined and amount of applying narcotic analgesics was decreased. Conclusion: It is suggested that moxibustion on BL13, BL17, BL42, BL43 is useful to relief of cancer pain in left flank area.