The utility model relates to a structure improvement of a hydroponics plant cultivation device.The system includes: a cultivation tank.Define a containment space；It has a drainage area.And a water outlet end is provided.And a water separator at the inner end of the holding space and defining the drainage area,The water separator plate is further provided with a flow limiting port；One water inlet area,Having a water inlet end；And at least one first limit area,Each first limit area is provided with a baffle plate.The utility model is provided with a group of connecting grooves；A cover body.The cover is arranged at the holding space of the cultivation tank.The system has at least one embedment area.The utility model has a water separating plate groove；At least one second limit area,The tie has at least one through hole.And each second limit area is provided with a pivot joint groove；At least one slow flow plate,And forming a flow channel；And at least one planting bed；In this way,The invention provides a stable flowing water speed and can control the water level of the culture liquid at the same time.And adjust the plants up and down with the water level.Hydroponics plant cultivation device with stable absorption of culture medium and other effects.一種水耕植物栽培裝置結構改良，係包括：一栽培槽，界定出一容置空間；其具有一排水區，而設有一出水端，及一設於該容置空間內側端之隔水板並界定出該排水區，該隔水板更設有一限流口；一進水區，具有一入水端；以及至少一第一限位區，各該第一限位區設有一阻隔板，其設有一組接槽；一蓋體，蓋設於該栽培槽之容設空間處，係具有至少一嵌設區，其具有一隔水板槽；至少一第二限位區，係具有至少一通孔，又各該第二限位區具有一樞接槽；至少一緩流板，並形成一流道；及至少一植床；藉此，提供一種達到穩定流水速度同時又能控制培養液其水位，並令植株隨水位上下調整，達到穩定吸收培養液等效果之水耕植物栽培裝置者。
