To directly manufacture a small web roll without winding a band web on a raw textile roll by guiding the band web continuously manufactured by a paper making machine directly to a web roll manufacturing machine.

A paper making machine and a fixed side unit of a web roll manufacturing machine 1 are actuated in the state where a movable side unit 1B is separated from the fixed side unit by a moving device 8. When supply of a band web Q from a dryer 90 is stabilized, the movable side unit 1B is moved to a combining position by the moving device 8 while actuating at prescribed speed a second winding belt 12 of the movable side unit 1B. In this way, it is possible to start web winding work by the web roll manufacturing machine 1 as it is when the movable side unit 1B is combined with the fixed side unit in a state the band web Q is passed through along the fixed side unit and possible to smoothly start driving even the one directly connecting the paper making machine and the web roll manufacturing machine 1.