TRAVEL WORKING MACHINE

A traveling work machine alternately and repeatedly performs a plurality of instances of work travel, in which a working device performs work while the traveling work machine automatically travels in a field along a pre-set target heading, and turning travel, in which the traveling work machine moves to a start position Ls2 of the next work travel while reversing a travel direction. The traveling work machine includes: a position detection unit that obtains position information of a machine body on the basis of a positioning signal from a navigation satellite; an end determination unit capable of determining the end of each of a plurality of instances of work travel; a start position calculation unit that calculates start positions Ls and Ls2; and a display unit capable of displaying information pertaining to the turning travel. When the end determination unit determines the end of the work travel, the start position calculation unit calculates, on the basis of the position information, the start position Ls2 on one of the left and right with respect to the travel direction of the machine body during the work travel, and the display unit displays guidance information guiding the turning travel to the start position Ls2.