Automatic analysis device and analysis method

The invention provides an automatic analysis device and analysis method. Disposable reaction vessels are collected together after analysis in a disposal unit, but if the reaction vessels accumulate ina cluster in part of the disposal unit, there is a risk that the contents may spill out, for example. Further, if the disposal unit itself is caused to vibrate in order to make the height of the reaction vessels more uniform, noise resulting from the vibration may impact measurement results, causing the analysis reliability to deteriorate. This automated analysis device is provided with: a reaction vessel disposal unit for disposal of reaction vessels for which measurement has been completed; a reaction vessel transferring mechanism which transfers the reaction vessels from a reaction vesselholding unit to the reaction vessel disposal unit and disposes of the reaction vessels in the reaction vessel disposal unit; and a control unit. The control unit controls the operation of the reactionvessel transferring mechan