Wind and sand prevention facility based on wind-shield wall

The utility model relates to the technical field of wind-sand-preventing facilities, in particular to a wind-sand-preventing facility based on a wind-shield wall, which comprises an outer wind shield and an L-shaped wind shield, the other end of the L-shaped wind shield is abutted against the top end of a foundation, an inclined wind deflector is rotatably arranged on one side of the outer wind shield close to the center of the foundation, and an arc-shaped wind deflector is rotatably arranged at the other end of the inclined wind deflector. The air guide area is divided into an upper air guide area located on the upper portion and a lower air guide area located on the lower portion by the inclined air guide plate and the arc-shaped air guide plate, a circulation opening is defined by the outer air baffle and the installation assembly, and a plurality of air guide fan frames are detachably and rotationally arranged on the side, close to the circulation opening, of the outer air baffle. According to the utilit