PROBLEM TO BE SOLVED: To prevent grass flowing into a chute from flowing back into a mower, and prevent the grass from jamming in the mower.SOLUTION: A cut grass guide body (11) for guiding cut grass from a more deck (9) provided below a vehicle body (1) toward a grass collecting container (10) placed in the rear and upper part of the vehicle body (1) is provided in an obliquely backward and upward posture. Back-flow prevention bodies (12) protruding upward from the bottom face of the cut grass guide body for preventing the cut grass from flowing reversely are provided in the cut grass guide body (11). Also, on the rear sides of the back-flow prevention bodies (12), cut grass drop ports (13) are provided by opening the bottom face of the cut grass guide body (11). The plurality of back-flow prevention bodies (12) are provided on the bottom face of the cut grass guide body (11) at predetermined intervals in a longitudinal direction.
