PROBLEM TO BE SOLVED: To provide an anti-inflammatory agent having high safety and also easily producible, and to provide the effective use of lees of sweet potato distilled spirit.SOLUTION: This anti-inflammatory agent includes lees of sweet potato distilled spirit and/or its treated material as an active ingredient. In the anti-inflammatory agent described in claim 1, the treated material is a concentrated liquid of lees of sweet potato distilled spirit and/or its treated material.【課題】安全性が高くかつ容易に製造することが可能な抗炎症剤を提供すること、及びイモ焼酎粕の有効な用途を提供すること。【解決手段】イモ焼酎粕及び/又はその処理物を有効成分として含むことを特徴とする抗炎症剤。【選択図】なし