PROBLEM TO BE SOLVED: To provide a simple-structured seedling transplanter capable of improving the operability and workability of a machine body and good for the global environment because a machine body of a conventional seedling transplanter is large-structured though the conventional seedling transplanter can plant seedlings in such a way that the vines of vine-like seedlings such as of sweet potatoes can be buried long in the front and rear direction under the soil, and can transplant the vine-like seedlings such as of sweet potatoes by a machine and as a result, the workability of the conventional seedling transplanter is greatly improved as compared to conventional manual planting work. SOLUTION: The seedling transplanter is equipped with a seedling planting device U in which a seedling conveying part 5 and seedling planting bodies 6 for planting seedlings conveyed by the seedling conveying part 5 in a field are disposed in a travelling machine body 4 to be moved by right and left travelling devices 7. The seedling planting device U is disposed on one side in the front and rear direction of the travelling machine body 4, and a power engine 3 is disposed on the other side in the front and rear direction. A control handle 2 is disposed on the side where the power engine 3 is disposed. COPYRIGHT: (C)2012,JPO&INPIT