PROBLEM TO BE SOLVED: To provide a foam forming aerosol composition which can easily obtain a stock solution in a stable emulsified state, and also has high foamability.SOLUTION: The foam forming aerosol composition is composed of: a stock solution comprising an oily component of 10.0 to 70.0 mass%, water of 20.0 to 85.0 mass%, a surfactant for emulsification made of polyoxyethylene glycerol fatty acid ester of 1.0 to 10.0 mass% and a foaming agent of 0.2 to 5.0 mass% and an injection agent, and in the stock solution, the containing ratio of the oily component is preferably 40.0 to 70.0 mass%, and the containing ratio of the water is preferably 20.0 to 55.0 mass%.COPYRIGHT: (C)2012,JPO&INPIT【課題】安定した乳化状態の原液を容易に得ることができ、かつ高い起泡性を有する泡沫形成エアゾール組成物を提供すること。【解決手段】泡沫形成エアゾール組成物は、油性成分10.0~70.0質量%、水20.0~85.0質量%、ポリオキシエチレングリセリン脂肪酸エステルよりなる乳化用界面活性剤1.0~10.0質量%および起泡剤0.2~5.0質量%を含有してなる原液と、噴射剤とよりなることを特徴とし、原液において、油性成分の含有割合が40.0~70.0質量%、水の含有割合が20.0~55.0質量%であることが好ましい。【選択図】なし