The present invention relates to a hydroponic device for growing an already grown plant in water for a decorative purpose. The present invention provides a hydroponic device having a support frame for preventing a grown plant from falling down. The hydroponic device comprises a cultivation tub (1) and a support frame (2) installed within the cultivation tub (1), and the support frame (2) includes: a hanging frame (21) installed to be supported on the cultivation tub (1)； a plurality of rods (22) for installing a resilient string, which are installed on the hanging frame (21) to extend downward in a direction perpendicular to the hanging frame (21)； and resilient strings (23) installed on the rods (22) for installing a resilient string. In the aquaculture of a large plant, it is possible to: correctly locate the plant in a preferred position of the hydroponic device； prevent the correctly located plant from lying or falling down； and support the correctly located plant with the resilient strings. In addition, all plants with various thicknesses can be safely supported by adjusting the installation gaps between the resilient strings； the stability of support can be enhanced by supporting the top and bottom of a stem with the resilient strings； and pressure applied to a stem of a plant can be reduced by supporting the stem with the resilient strings, which makes it possible to prevent the growth of the plant from being inhibited by the support pressure due to the resilient strings.La présente invention concerne un dispositif hydroponique pour la croissance d'une plante déjà cultivée dans l'eau dans un but décoratif. La présente invention concerne un dispositif hydroponique ayant un cadre de support pour empêcher une plante cultivée de tomber. Le dispositif hydroponique comprend un pot de culture (1) et un cadre de support (2) installé dans le pot de culture (1), et le cadre de support (2) comprend : un cadre d'accrochage (21) installé pour être supporté sur le pot de c
