The invention aims to improve surface tackiness of a curable composition comprising a reactive silicon group-containing polyoxypropylene polymer without decreasing coating workability, strength, adhesion and appearance. As one embodiment of a means for resolution, a curable composition comprising (A) 100 parts by weight of a reactive silicon group-containing polyoxypropylene polymer, (B) from 0.1 to 20 parts by weight of a silane coupling agent, (C) from 0.1 to 80 parts by weight of an epoxy group-containing compound, (D) from 0.1 to 60 parts by weight of a tertiary amine, and (E) from 0.1 to 30 parts by weight of a primary or secondary amine having a melting point of 20.degree. C. or more is mentioned.