The utility model discloses a screening distributing machine with a large screen surface. The screening distributing machine comprises a machine body and a power control machine, the machine body comprises a feeding port, a screening cavity, a coarse material discharging port and a plurality of fine material discharging ports. A plurality of screening rollers are arranged in the screening cavity and are obliquely arranged from the top end to the bottom end of the screening cavity; the angle between every two adjacent screening rollers is 90 degrees. The screening roller comprises a screening barrel, a plurality of first screening holes, a rotating shaft, a plurality of oval screening pieces, a plurality of second screening holes and a guide piece. And a plurality of automatic material distributing devices are arranged at the top of the screening cavity. Compared with a traditional screening machine, the screening distributing machine with the large screening surface has the advantagesthat the screening area is larger, the possibility of material blockage is reduced, the screening efficiency is improved, and the noise is reduced.