Cancer pain is one of the most common clinical symptoms of tumor. According to statistics，about 50% of cancer patients feel varying degrees of pain. 75% of patients with advanced cancer suffer from pain，among which 40% - 50% are in moderate to severe pain，and 25~30% in sharp pain. TCM holds that the main and collateral channels congestion is the basic pathogenesis of cancer pain. Apart from the analgesic effect TCM plays in treating cancer pain，it also pays attention to improving patient's pain and quality of life through the external use of medication，acupuncture，and acupoint application. TCM is widely used clinically for the treatment of cancer pain. Its advantages lie in being economical，effective，with fewer side effects and easy to accept for patients. This paper analyzes the research progress of TCM in the treatment of cancer in recent years.