An analyzer comprising: a first specimen holder configured to hold a plurality of first specimen containers accommodating a continuous measurement specimen to be continuously measured; a conveying assembly for conveying the first specimen containers held in the first specimen holder; a second specimen holder (255, 355) arranged at a position higher than an upper end of the first specimen containers held in the first specimen holder and configured to hold at least one of the first specimen containers and a second specimen container accommodating a priority measurement specimen to be measured in preference to the continuous measurement specimen; a holder moving assembly (255d, 355d) for moving the second specimen holder so as to pass the upper end of at least one of the first specimen containers held in the first specimen holder; a container transferring assembly (251, 351) for transferring at least one of the first specimen containers from the first specimen holder to the second specimen holder (255, 355); and characterised by: a controller for controlling the holder moving assembly (255d, 355d) and the container transferring assembly (251, 351) to execute steps of: raising at least one of the first specimen containers held in the first specimen holder to the upper end of the second specimen holder (255, 355) in a state the second specimen holder (255, 355) does not exist on the upper end, moving the second specimen holder (255, 355) to the lower side of the raised first specimen container, and setting the first specimen container in the second specimen holder (255, 355) by lowering the first specimen container. a first specimen holder configured to hold a plurality of first specimen containers accommodating a continuous measurement specimen to be continuously measured; a conveying assembly for conveying the first specimen containers held in the first specimen holder; a second specimen holder (255, 355) arranged at a position higher than an upper end of the first specimen containers held in the first specimen holder and configured to hold at least one of the first specimen containers and a second specimen container accommodating a priority measurement specimen to be measured in preference to the continuous measurement specimen; a holder moving assembly (255d, 355d) for moving the second specimen holder so as to pass the upper end of at least one of the first specimen containers held in the first specimen holder; a container transferring assembly (251, 351) for transferring at least one of the first specimen containers from the first specimen holder to the second specimen holder (255, 355); and characterised by: a controller for controlling the holder moving assembly (255d, 355d) and the container transferring assembly (251, 351) to execute steps of: raising at least one of the first specimen containers held in the first specimen holder to the upper end of the second specimen holder (255, 355) in a state the second specimen holder (255, 355) does not exist on the upper end, moving the second specimen holder (255, 355) to the lower side of the raised first specimen container, and setting the first specimen container in the second specimen holder (255, 355) by lowering the first specimen container. raising at least one of the first specimen containers held in the first specimen holder to the upper end of the second specimen holder (255, 355) in a state the second specimen holder (255, 355) does not exist on the upper end, moving the second specimen holder (255, 355) to the lower side of the raised first specimen container, and setting the first specimen container in the second specimen holder (255, 355) by lowering the first specimen container.