PROBLEM TO BE SOLVED: To provide a transplanter capable of compactly installing a housing tank for housing an application agent of a fluid and a delivery unit between a seat of a traveling machine body and a seedling-carrying platform of a planting device and keeping the machine body in a well-balanced state. SOLUTION: This transplanter is obtained by installing the fluid substance housing tank 30 of an application agent feeder 3 and the delivery unit 3a for delivering the application agent from the application agent housing tank 30 in the left and right at the rear of the seat 1f of a maneuvering part 1g in the transplanter equipped with the planting device 2 and the application agent feeder 3 in the traveling machine body 10 provided with the maneuvering part 1g central part in the left and right direction of the machine body 10 and carrying out the application of the application agent in a fluid form simultaneously with the transplantation.
