AUTOMATIC ANALYSIS DEVICE

The present invention provides an automated analyzer that can highly accurately detect the position of a front end of a nozzle for dispensing, thus being able to highly accurately adjust the position of the nozzle. The automated analyzer according to the present invention includes: dispensing mechanisms (14, 15) including nozzles (21, 22) that dispense a reagent and a specimen, respectively, and dispensing arms (201) that move the nozzles (21, 22), respectively; cleaning tanks (26, 27) for cleaning the nozzles (21, 22) ; and an automated analyzer control unit that adjusts positions of the nozzles (21, 22). The automated analyzer analyzes a mixed liquid of the reagent and the specimen, the mixed liquid being held in a reaction cell. At the dispensing mechanisms (14, 15), stop positions of the nozzles (21, 22) are set. The dispensing mechanisms (14, 15) each include an imaging device (202) disposed on each of the dispensing arms (201). The automated analyzer control unit takes images of the nozzles (21, 22), using the imaging device (202), at imaging positions (407, 412) of the nozzles (21, 22). The imaging positions (407, 412) are positions to which the nozzles (21, 22) are allowed to move, respectively, and are positions different from the stop positions.