PROBLEM TO BE SOLVED: To provide a hydroponic tray by which the work burden at the time of sowing the seeds of a cultivation subject plant is reduced, while reducing the number of members as much as possible by simplifying a composition, and in which a plant can be cultivated in a stable condition without the need for the transplantation of a seedling, and by which the working efficiency from the harvest of the grown cultivation subject plant to the next sowing seeds can be improved.SOLUTION: The invention comprises a seedbed holding part 2 consisting of a stainless steel wire mesh tray installed in inverted orientation in a container 10 for the distribution of the hydroponic culture medium and a seedbed part 3 consisting of a wave-shaped sound absorbing sponge installed on the seedbed holding part.SELECTED DRAWING: Figure 1