To obtain an adhesive material which has excellent solubility, heat stability and initial adhesive power, high workability and adhesive strength due to rapid progress of cationic polymerization up to a desired polymerization degree and to provide an adhesion method using the material.

The curing adhesive material comprises an acid generator (A) consisting of an onium cation and a borate anion represented by general formula (1) [BymZn]- (Y is fluorine or chlorine; Z is a phenyl group substituted with at least two or more electron attractive groups selected from fluorine, a cyano group, a nitro group and a trifluoromethyl group; m is an integer of 0-3; n is an integer of 1-4; m+n is 4), an adhesive polymer (B) and a cationically polymerizable compound (C).