In order to provide an efficient hydroponic culture system, the present invention provides a hydroponic culture system provided with: a plurality of water tanks which extend in a predetermined direction； a plant holding plate which holds plants and are disposed to extend over the plurality of water tanks； and at least one support mechanism which is provided between adjacent water tanks among the plurality of water tanks, wherein each of the plurality of water tanks is configured to contain a culture solution required to grow the plant, and the support mechanism supports the plant holding plate above the plurality of water tanks.
