PROBLEM TO BE SOLVED: To provide a surfactant composition that provides quick foaming and stiff foam when foaming.SOLUTION: The invention provides a surfactant composition containing a component (a) consisting of a compound represented by the formula (1) of Claim 1, and a component (b) consisting of a compound represented by a formula (2) and/or a compound represented by a formula (3) of Claim 1, wherein the mass ratio [(a)/(b)] of the component (a) to the component (b) is 1/1-1/10.SELECTED DRAWING: None
