PROBLEM TO BE SOLVED: To provide a therapeutic agent useful for the treatment of chronic obstructive pulmonary disease (COPD).SOLUTION: A therapeutic agent for chronic obstructive pulmonary disease comprises lysozyme or a pharmaceutically acceptable salt thereof, the agent very effective for patients on which conventional drug therapies for COPD have had a limited effect.SELECTED DRAWING: NoneCOPYRIGHT: (C)2016,JPO&INPIT【課題】慢性閉塞性肺疾患(COPD)の治療に有用な治療剤の提供。【解決手段】これまでのCOPDに対する薬物療法では不十分な患者に対して極めて有効である、リゾチーム又はその薬剤学的に許容される塩を含む慢性閉塞性肺疾患治療剤。【選択図】なし