PROBLEM TO BE SOLVED: To provide a foaming aerosol composition that can be sprayed continuously from a container to form a dense and uniform foam, the formed foam having a certain elasticity and being capable of being easily applied and spread on an object.SOLUTION: According to the present invention, there is provided a foaming aerosol composition comprising: a stock solution containing cellulose nanofibers; and a propellant.SELECTED DRAWING: None【課題】連続的に容器から噴射されて緻密で均一な泡を形成し、形成された泡が一定の弾力を持ち、かつ形成された泡を対象物へ容易に塗り広げることができる、発泡性エアゾール組成物を提供する。【解決手段】セルロースナノファイバーを含む原液、及び噴射剤を含む、発泡性エアゾール組成物。【選択図】なし