The present invention relates to a soil and water supply device for a seedling pot, a conveyor provided to facilitate the transfer of the seedling port, a first motor provided on the conveyor to transmit rotational force to the conveyor, and on the other inside side of the conveyor It is provided symmetrically in the front-rear direction, and each is provided with a chain guide plate formed in a plate shape elongated from one side to the other, and each chain guide plate is provided to surround the outside, and a transfer chain is rotated by receiving the rotational force of the first motor. In addition, a plurality of spaced apart protrusions are provided on the outer side of the transfer chain, and a seedling port transfer section provided with a seedling port transfer port, which is respectively engaged with a lower portion of the seedling port, and is provided on the other side of the upper first motor of the conveyor, and has upper and lower sides. The seedling port is opened, the front and rear sides are formed in a plate shape, the other side is connected to the front and rear sides of the conveyor, and the seedling port supply unit is formed with a supply bar extending upwardly inclined from the upper side to the upper side of the other side. A second motor provided on an upper portion of the first motor to provide rotational force, and provided on one side of the first motor and the second motor, and a hopper in which soil is introduced into the upper portion, and an inner upper portion of the hopper. A first shaft that is rotated by receiving rotational force from a 2 motor is provided, and a plurality of protrusions spaced apart from each other on the first shaft, and mixing ends protruding in either one of the front or rear directions at the protruding ends are provided. On the inner lower part of the hopper, a second shaft is provided that is rotated by receiving rotational force from the second motor, and is formed in a plate shape on the second shaft,
