癌症疼痛的三阶梯治疗方法是对癌痛的性质和原因作出正确的评估．对轻度疼痛患者应主要选用解热镇痛剂类；中度疼痛应选用弱阿片类药物；重度疼痛应选用强阿片类药物，镇痛剂的选用应由弱到强逐级增加。1癌症疼痛药物治疗应遵循的原则1．1口服给药选择好口服给药途径，避免创伤 The three-step treatment of cancer pain is a correct assessment of the nature and causes of cancer pain. Patients with mild pain should mainly choose antipyretic analgesics; mild pain should use weak opioid drugs; severe pain should use strong opioid drugs, and the choice of analgesics should be gradually increased from weak to strong. 1 Principles to be Followed in Cancer Pain Medicine Treatment 1.1 Oral Administration Choose a good oral administration route to avoid trauma