The utility model discloses a plant cultivating device, including cultivating the bed and fixing at the fixed establishment who cultivates a bed border, the careless paper gasket of bed including the bottom cultivate, the humic of establishing on grass paper gasket is trained the substrate and is established the biodegradable plastic net on the substrate is trained to the humic, other three borders of grass paper gasket are upwards turned up and are constituted borduring of parcel humic culture medium edge, be equipped with a plurality of straw ropes in the grass paper gasket, the stiff end and the fixed establishment of straw rope are connected, fixed establishment includes that one has the rectangle box of storing the chamber, the top of box is equipped with and stores the inlet tube and the nutrient solution feed liquor pipe of chamber intercommunication, the bottom of box is equipped with splint through the pressure spring, the stiff end and the grass paper gasket of straw rope are located between splint and the bottom half at the border corresponding to the box, the bottom of box still is equipped with and is used for inserting earth and carries out the drill rod fixed. The utility model discloses a plant cultivating device can cultivate the turf seed then direct the growth on carrying the slope, and the cultivation bed is fixed firm, can water nutrient solution and water automatically.