A production management computer totals the data of the component pickup operation quantity of the suction nozzle and the pickup error quantity sent from control device of each component mounter for each type of component, and calculates the ratio of the pickup quantity or the ratio of the pickup error quantity with respect to the component pickup operation quantity of the suction nozzle for each type of component as a component pickup rate. Here, production management computer separately calculates an after-feeder-setting component pickup rate, a main component pickup rate, a near-tape-trailing-end component pickup rate, and an after-splicing component pickup rate as component pickup rates for each type of component.