PROBLEM TO BE SOLVED: To provide a hydroponic device that is easily transported and stored, that can be easily installed in cramped places such as on the balcony of a household, and that can be easily assembled and dismantled alone.SOLUTION: The hydroponic device comprises: an assemblable or foldable air permeable support frame 1 provided with a plurality of air holes 18, 19; a basket 2 inserted into the support frame 1 and provided with a plurality of ventilation meshes 7 around the periphery thereof; a water tank 8 held in the basket 2 and made from an air permeable sheet 8A that stores a nutritious liquid A therein; a lid 3 that is provided on the opening end of the support frame 1 or the basket 2; one or a plurality of openings 6 formed in the lid 3; a clamping tool 4 fitted in the openings 6; and a water supply sheet 5 for seeding which, while being held in a state in which a seed is held in the clamping tool 4, is soaked in the nutrient solution A and sucks up the nutrient solution.SELECTED DRAWING: Figure 1【課題】 搬送、格納が容易であり、各家庭のベランダ等の狭い場所でも容易に設置でき、個人でも容易に組立、解体ができる水耕栽培装置を提供すること。【解決手段】 複数の通気孔18、19を備えた組み立て式又は折り畳み式の通気性支持枠1と、上記支持枠1内に挿入され周囲に多数の通気用メッシュ7を備えた籠2と、上記籠2内に保持されて内部に養液Aを収容した通気性シート8Aからなる水槽8と、上記支持枠1又は上記籠2の開口端に載置した蓋3と、上記蓋3に形成した一つ又は複数の開口6と、上記開口6に嵌合した挟持具4と、上記挟持具4に種子を保持した状態で挟持されながら上記養液A内に浸されて養液を吸い上げる播種用の給水シート5とからなる。【選択図】 図1