Improved greenhouse structure

The utility model relates to the technical field of greenhouses, in particular to an improved greenhouse structure which comprises a greenhouse body, sliding rods are fixedly arranged on the two sides in the greenhouse body, sliding sleeves are arranged on the surfaces of the sliding rods in a sliding mode, and lead screw nuts are fixedly arranged at the lower ends of the sliding sleeves. At night, a first motor is started to drive a take-up roller, the heat preservation blanket is pulled through a connecting line to cover the top of the greenhouse body for heat preservation, a second motor is started to drive a lead screw to rotate, and therefore a lead screw nut is driven to transversely move; a fourth motor is started to drive the diffusion plate to adjust the angle, sunlight can be diffused, sunlight dead corners on the edge of the inner side of the greenhouse are supplemented with light, a water pump is started to spray water in a water tank through a spraying pipe to irrigate the inner side of the green