Hydroponic forage grass device

The utility model discloses a hydroponic pasture device which comprises a seedling raising frame and seedling raising plates, the seedling raising frame is of a multi-layer structure formed by welding square pipes, the seedling raising plates are placed on each layer, and a plurality of drainage holes are formed in the bottom of each seedling raising plate. A water collecting tray is respectively fixed on the seedling raising frame below each layer of seedling raising tray, the bottom of each water collecting tray is respectively communicated with a drain pipe, the outlet end of the drain pipe of the upper layer of water collecting tray sequentially extends into the lower layer of water collecting tray, and the outlet of the drain pipe of the bottommost layer of water collecting tray is communicated with the inlet of a water collecting tank arranged at the bottom of the seedling raising frame; and spraying pipes and LED lamp tubes are horizontally fixed above the seedling raising tray on the uppermost layer a