The utility model provides a seedling transplanter. The seedling transplanter is provided with a floating body which does not generate water flow toward planted seedlings. In the seedling transplanter which is provided with a seedling planting part on a running vehicle body, the floating body is arranged on the seedling planting part, and a water introducing groove in front and back direction of a body is formed in the floating body the inner bottom, forming the inner side of the body, of the water introducing groove is positioned above the outer bottom, forming the outer side of the body, of the water introducing groove the water introducing groove is formed by a deep groove part in front of the body, a shallow groove part on the back of the deep groove part and an inclined part connected with the deep groove part and the shallow groove part, and the left-right width of the deep groove part is wider than that of the inclined part and the shallow groove part earth covering parts for filling slots of a field are arranged at front, back and center parts of the body of the floating body to form the structure that an acting part forming the earth covering parts and the inclined part are arranged along the left-right direction of the body. According to the seedling transplanter, planted seedlings are prevented from being washed away by the water flow generated by the floating body, manual operation of operators for seedling planting operation is not needed, and labor force of operators is reduced.
