To provide a nucleic acid-immobilized board where nucleic acids are conveniently and efficiently introduced on a substrate, it is possible to be made by a simple apparatus and nucleic acids are firmly immobilized irrespective of their length in the form of micro points on a carrier.

This nucleic acid-immobilized board features that the same or varied nucleic acids are immobilized in the form of points through the following alkylation groups on the plural parts of the carrier which has the substrate and a compound having an alkylation group and supported on the substrate.