The antimicrobial composition of the present invention comprises a cationic active ingredient, a foam-promoting surfactant, a foam-promoting copolymer, a foam stabilizer, and a chelating agent. The antibacterial composition is free of the antibacterial agent triclosan (ie, 2,4,4′-trichloro-2′hydroxy-diphenyl ether), has rapid killing activity, provides a stable and large amount of foam, Show enhanced tissue (eg skin) compatibility as defined by the toxicological assessment method. [Selection] Figure 1本発明の抗菌組成物は、カチオン性活性成分、泡促進性界面活性剤、泡促進性コポリマー、泡安定剤、及びキレート剤を含む。本抗菌組成物は、抗菌剤トリクロサン(すなわち、2,4,4’-トリクロロ-2’ヒドロキシ-ジフェニルエーテル)を含まず、迅速な殺活性を有し、安定で大量の泡を提供し、インビトロ全体的毒物学評価方法によって定義される強化された組織(例えば皮膚)適合性を示す。【選択図】図1