An array 1 provided with microprotrusions comprises a base 2 and tapered microprotrusions 3 each disposed on the base 2 and tapering down toward the tip from the bottom. Letting a distance from the tip to the bottom on an arbitrary side of each microprotrusion 3 as a and letting the length of a second line segment prepared by projecting a first line segment representing the distance a onto the base 2 as b, a relationship of 1.0 < (a/b) ‰¤ 7.5 holds.
