Forage grass culture system

A forage grass culture system comprises a culture room, a culture frame arranged in the culture room, a culture device placed on the culture frame, an illumination system for providing illumination conditions for forage grass, a heating system for providing heat for the forage grass, a water spraying system for providing water and nutrients for the forage grass, a breeding box and a microalgae expanding culture device arranged in the culture room, in addition, a temperature sensor, an illumination intensity sensor and a central controller are further arranged, the temperature sensor and the illumination intensity sensor are connected with the central controller and transmit monitored data to the central controller, and the central controller is further connected with the heating system and the illumination system. The heating system and the illumination system can be adjusted in real time according to data monitored by the temperature sensor and the illumination intensity sensor. According to the utility mode