An analysis device and an analysis method for a preparatory work time in a paper converting machine, includes an operator position detection device configured to detect a working position of an operator in the preparatory work time of a box making machine, an action diagram creation unit configured to create an action diagram of the operator based on the detection result of the operator position detection device, a work content item table creation unit configured to create a work content item table indicating a work content in the preparatory work time for each item based on operation processing data and operation data of the box making machine, and an operation process improvement item selection unit configured to select an improvement item of an operation process in the preparatory work time based on a creation result of the action diagram creation unit and the work content item table creation unit.
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