A nucleic acid analyzer includes a nucleic acid purification kit yielding a nucleic acid solution by isolating and purifying nucleic acid from a specimen; a nucleic acid analysis chip having a rotation axis positioned at a center thereof, with reaction containers at an outer portion than the rotation axis, and feeding the acid to the containers through centrifugal force; a specimen-introducing part on which the kit is placed; an analysis chip holder at the specimen-introducing part and supporting the chip; a purification treatment unit injecting the nucleic acid solution containing the nucleic acid into the chip; a centrifugal liquid feed unit feeding the nucleic acid solution to the containers by rotating the chip about the rotation axis; an analysis unit analyzing reaction products in the containers; and a transport part transporting the specimen-introducing part to the purification treatment unit, the centrifugal liquid feed unit, and the analysis unit.