The invention subjects to provide a structure for providing seedling to left and right seedling body by using a seedling providing apparatus with a seedling containing body which moves along an annular path, wherein, the structure can properly provide seedling to the seedling body and can easily modify the interval between plant strips. A multi-row seeding-planting machine is equipped with a seedling providing device (24) which includes: plural first seedling containing bodies (25b) and second seedling containing bodies (25c); a moving mechanism (26); a seedling dropping providing mechanism (27), which is characterized in being equipped with planting position transformation mechanisms (69, 70) for respectively moving the left and right seedling bodies (5, 5), dropping position transformation mechanisms (42e, 42f) which moves the seedling dropping providing mechanism (27) from the left dropping providing position or the right dropping providing position to the raising positions of the left and right seedling bodies (5, 5).