PROBLEM TO BE SOLVED: To reduce the size of a machine body by utilizing an interval part in a seedling planting machine. SOLUTION: In this seedling planting machine for a plurality of row crops in which a seedling planting machine body 9 is provided at a car body 7 in capable of elevation, and a seedling platform 11 arranged in plural in the right and left on the rear of an operator's seat 52 provided at the car body 7 is supported by the seedling planting machine body 9 so that a plurality of interval parts A are formed mutually for planting seedlings loaded on the seedling platform 11, a frame 70 is provided at each of the interval parts A of the seedling platform 11 extending from below a floor 50 provided close to the operator's seat 52 to the rear of the seedling platform 11, and the frames 70 passing these plural interval parts A are connected on the rear of the seedling platform 11. COPYRIGHT: (C)2003,JPO