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.