A water culture device of a miniature vegetable production system is provided, belonging to the technical field of facility agriculture culture. The device comprises a water culture tank, a field planting cover plate, a liquid storing pool, a liquid supply pipe and a liquid return pipe, wherein the water culture tank and the liquid storing pool are connected by the liquid supply pipe and the liquid return pipe the parts of the water culture tank, positioned at the lower parts of the two opposite sides are respectively provided with a liquid supply hole and a liquid return hole the bottom surface of the water culture tank is provided with liquid discharging hole and the field planting cover plate is provided with field planting holes and is longitudinally placed on the water culture tank. The water culture tank is compact in design, attractive in material, reasonable in proportion and appropriate in depth, is suitable for being used in miniature vegetable production system, can provide good environment for growth of plants, is convenient for manual operation and management, and is economical and practical.Linvention porte sur un dispositif de culture hydroponique dun système de production de légume miniature, appartenant au domaine technique de la culture agricole dans des fermes. Le dispositif comprend un réservoir de culture hydroponique, une plaque de couvercle de plantation de champ, un bassin de stockage de liquide, un tuyau dalimentation en liquide et un tuyau de retour de liquide, le réservoir de culture hydroponique et le bassin de stockage de liquide étant reliés par le tuyau dalimentation en liquide et le tuyau de retour de liquide les parties du réservoir de culture hydroponique, positionnées au niveau des parties inférieures des deux côtés opposés, comportent respectivement un trou dalimentation en liquide et un trou de retour de liquide la surface inférieure du réservoir de culture hydroponique comporte un trou dévacuation de liquide et la plaque de c
