To provide a nutritious liquid feeder appropriately controlling an amount of nutritious liquid fed to each bed forming each cultivation table, and generating a flow in the nutritious liquid, where a necessary amount of the liquid can be pooled.

The nutritious liquid feeder is structured as follows: establishing a plurality of pieces of a pair of wall materials having a space between them in a width direction; vertically setting brackets to a post material set along the wall material, and setting beds each on the bracket in a horizontal direction so as to make one side of the bed higher and another side of the bed lower to be slanted. In the feeder, the nutritious liquid fed from a nutritious liquid preparing/discharging device is poured via a nozzle connected to a feeding pipe from one side of the bed, and the surplus of the liquid is discharged from a discharging port having a predetermined rising dimension from the bottom surface of the other bottom surface.