The present invention relates to a seedling box supply and recovery device, a plurality of wheels are provided at the lower portion, and a plurality of wheels are provided with a loading portion formed to be stacked on the upper portion of the wheel, and can be gripped at the rear of the loading portion. A moving means provided with a handle, a connecting plate provided above the loading portion of the moving means, a fixed plate through which a screw hole is formed while being penetrated up and down inside, and a long fixed hole formed vertically on the fixed hole of the fixed plate, In addition, the lower portion of the extension portion of which the outer side is formed of a polygon is coupled, and an upper portion of the extension portion is provided with a control portion having a spherical control portion, and is provided on the upper portion of the control portion, and is provided to surround the upper portion of the control portion at the lower portion and to the outside. The adjusting member seating hole on which the thread is formed is provided, and the upper portion of the adjusting member seating plate is formed in a plate shape, and the coupling portion having a coupling plate extending at both ends to the upper portion, and is provided below the adjusting portion of the adjusting portion to provide a lower portion of the adjusting portion. It is provided so as to be wrapped, the outer side is formed of a polygon, the inner side is extended through, the inner upper portion is coupled to the adjusting device seat and the screw thread, and the lower portion is extended to the outside and is fastened with a fastener handle formed to be gripped. , The front of the coupling portion is provided longer than the rear, the inner side is provided with a plurality of transfer rollers that the rotational force is synchronized by a belt, the outer side is a conveyor with a motor that provides a rotational force to the plurality of transfer rollers, A battery part pr
