PROBLEM TO BE SOLVED: To provide a work vehicle cooperation system which effectively functions in a ground work form in which work traveling and turning traveling are mixed.SOLUTION: A work vehicle cooperation system includes: a master position detection module for detecting a position of a master work vehicle a slave position detection module for detecting a position of an unmanned steering type slave work vehicle a master traveling track calculating portion for calculating a traveling track of the master work vehicle a turning detection portion for detecting turning traveling of the master work vehicle for shifting from one work traveling in a turning area to next work traveling a work traveling target calculating portion for calculating a target traveling position at the work traveling of the slave work vehicle on the basis of the work traveling track of the master work vehicle and the position of the slave work vehicle and a turning traveling target calculating portion for calculating a target traveling position at turning traveling on the basis of a turning traveling route of the slave work vehicle calculated on the basis of a turning traveling start position and a turning traveling finish position of the master work vehicle.SELECTED DRAWING: Figure 1
