PROBLEM TO BE SOLVED: To provide a seedling transplanting machine that enables working materials to be loaded from the front side of a vehicle body and also even from the side, when the working materials such as preliminary seedlings or fertilizers are loaded on the vehicle body, and suppresses labor of a worker required for the movement of the working materials.SOLUTION: A seedling transplanting machine is provided with a seedling planting part 10 for planting seedlings loaded at the rear side of a vehicle body 6, and a fertilizing unit 13 for fertilizing fertilizers on the soil surface where the seedling planting part 10 plants the seedlings therein. A boarding member 15 is provided at the outer side of the vehicle body 6, and an extension member 16 is extendably configured toward the outside of the machine body in the boarding member 15. The extension member 16 is turnably configured to a boarding step 15, and switchably configured from a storage position stored in the side lower part of the vehicle body 6 to the position extending outside of the vehicle body 6 when the boarding step 15 is turned.COPYRIGHT: (C)2015,JPO&INPIT【課題】予備苗や肥料等の作業用資材を走行車体に積み込む際、走行車体の前側だけでなく側方からでも作業用資材を積み込むことができ、且つ作業用資材の移動に要する作業者の労力が抑えられる苗移植機を提供する。【解決手段】走行車体6の後側に積載した苗を植え付ける苗植付部10を設け、苗植付部10が苗を植え付ける土壌面に肥料を施肥する施肥装置13を設けた苗移植機において、走行車体6の外側部に搭乗部材15を設け、搭乗部材15に延長部材16を機体外側に向けて張出可能に構成し、延長部材16は、搭乗ステップ15に対して回動可能に構成し、搭乗ステップ15を回動させると走行車体6の側方下部に収納される収納位置から、走行車体6の外側の張出位置に切替自在に構成する。【選択図】図1