Abstract: This invention relates to a transplanter of seedlings useful for supplying seedlings in a controlled state. Seedlings grown in paper tubes which are a mixture of superior and inferior seedlings are placed on a seedling supplying conveyor and separated into individuals at a certain interval by a seedling separating apparatus at the terminal of the conveyor. Behind the seedlings separating apparatus is a string-like belt to support roots and leaves, to which is supplied seedlings obtained by separation. Inferior seedlings free of leaves fall onto the string-like belt to transfer only superior seedlings. Behind the string-like belt is a seedling controlling conveyor rotating at a certain velocity, to which seedlings are transferred.