A work machine and a mounting method by which end portions of a wire member can be mounted on connecting sections which are arranged variously are provided. A work head includes a first holding section configured to hold a first end portion and a second holding section configured to hold a second end portion. A control device includes a first mounting section configured to mount the first end portion held by the first holding section on a first connecting section, a moving section configured to cause a work head moving device to move the work head in accordance with a position of the second connecting section after having mounted the first end portion on the first connecting section, and a second mounting section configured to mount the second end portion held by the second holding section on a second connecting section.