癌症疼痛治疗（简称癌痛治疗）是癌症综合治疗的核心环节之一，其最终目标为将疼痛降低至患者能够接受的水 平。但是，癌痛治疗过程中存在的不良反应在一定程度上降低了患者的生活质量。本共识旨在为癌痛患者镇痛治疗不良反应 的防治提供参考，以期提高癌痛患者的生活质量。

Cancer pain treatment is one of the core links of comprehensive cancer treatment. The ultimate goal is to reduce pain to a level that is acceptable to patients. However, the adverse reactions in the treatment of cancer pain have reduced the quality of life of patients to a certain extent. This consensus aims to provide a reference for the prevention and treatment of adverse effects of analgesia in patients with cancer pain, to improve the quality of life of patients with cancer pain.