Fertilizer particle screening device and use method thereof

The invention provides a fertilizer particle screening device and a use method thereof, and relates to the technical field of fertilizer screening, the fertilizer particle screening device comprises a feeding structure, a conveying structure and a screening structure; the material conveying structure comprises a first material guide plate, a conveying belt assembly and a second material guide plate. The screening structure comprises a first screening plate and a second screening plate, a first collecting tank and a second collecting tank are arranged below the first screening plate and the second screening plate respectively, and a third collecting tank is arranged on the side, away from the first collecting tank, of the second collecting tank. A cover body is arranged above the screening structure, and a second opening of the cover body is connected with an air blower; the first collecting tank is communicated with the second collecting tank through a first filter screen, a second filter screen and a third f