To provide a two-liquid type polyurethane sealing material composition which has excellent hardenability without using a copper-system catalyst, does not cause the foam formation of a hardened product, is excellent in the hardenability at a low temperature, can solve a problem of the contamination of a coating, is excellent in workability, and excellent in heat resistance.

The two-liquid type polyurethane sealing material composition contains: (A) an urethane prepolymer which is a product of an isocyanate compound and polyol; (B) an organic bismuth salt; (C) at least one compound selected from a group composed of sulfonic-acid type anionic surfactants and sulfuric-acid ester type anionic surfactants; (D) aldimine; (E) an alkenyl succinic acid anhydride; and (F) polyol. The (A) urethane prepolymer of 100 pts.mass is preferably mixed with the (B) organic bismuth salt of 0.1 to 5 pts.mass, the (C) compound of 0.1 to 30 pts.mass. the (D) aldimine of 0.5 to 10 pts.mass, and the (E) alkenyl succinic acid anhydride of 0.05 to 5 pts.mass.