A chemically amplified resist composition comprising:(A) a salt represented by the formula (I): wherein R21 represents a C1-C30 hydrocarbon group etc., Q1 and Q2 each independently represent a fluorine atom etc., and A+ represents at least one organic cation selected from a cation represented by the formula (Ia): wherein P1, P2 and P3 each independently represent a C1-C30 alkyl group etc., a cation represented by the formula (Ib): wherein P4 and P5 each independently represent a hydrogen atom etc., and a cation represented by the formula (Ic): wherein P10, P11, P12, P13, P14, P15, P16, P17, P18, P19, P20 and P21 each independently represent a hydrogen atom etc., B represents a sulfur or oxygen atom and m represents 0 or 1, (B) a salt represented by the formula (II): A′+−E  (II) wherein A′+ represents at least one organic cation selected from cations represented by the above-mentioned formulae (Ia), (Ib) and (Ic), and E− represents at least one organic anion selected from an anion represented by the formula (II-1): −O3SQ3  (II-1) wherein Q3 represents a C1-C10 perfluoroalkyl group, and an anion represented by the formula (II-2): wherein Q4 represents a C1-C10 perfluoroalkyl group, and (C) a resin which contains a structural unit having an acid-labile group and which itself is insoluble or poorly soluble in an aqueous alkali solution but becomes soluble in an aqueous alkali solution by the action of an acid.