<p>A chemical analysis device capable of suppressing deterioration of analysis and test accuracy while avoiding contamination by residual samples or reagents and having no complicated configuration is constructed. A pipetting unit is equipped with a syringe, plunger, and needle unit in which a carrier for capturing nucleic acid and a detection cell is mounted on the needle unit. A pipetting unit drive system is configured so that the pipetting unit is detachable. After the detection cell is removed from the pipetting unit and fixed to a nucleic acid amplification detection unit, a suction/dispensing operation of samples/reagents is performed by the pipetting unit and components to be measured are captured by the carrier. Captured components are measured after being dispensed into the detection cell fixed to the nucleic acid amplification detection unit. Then, the detection cell is taken out from the nucleic acid amplification detection unit while mounted on the pipetting unit and the whole pipetting unit is removed from the pipetting unit drive system.</p>
