<p>An automatic analyzer resumable in a short time even after the storage fails. An analyzer processing unit (33) stores at least either accuracy management information including the result of measurement of an accuracy management sample by using a reagent, the measurement date/time, and the information about the measuring device or calibration information including the result of calibration using the reagent, the measurement date/time of the calibration, and the information about the measuring device. A reagent managing unit (32) reads/writes information from/in a reagent vessel ID tag provided to a reagent vessel (8) contained in a reagent containing unit (7) containing the reagent. An analyzer processing unit (33) allows the reagent managing unit (32) to write the accuracy management information or the calibration information in the reagent vessel ID tag.</p>
