The utility model provides a hack soil screening device, sets up in screening case top including garrulous soil box and screening case, garrulous soil box, is equipped with two cylinders among the garrulous soil box, and garrulous soil box top surface is equipped with the feed inlet, the top of feed inlet setting between two cylinders, garrulous soil box keeps away from and still is equipped with the discharge gate on the lateral wall of feed inlet one end, the screening incasement is equipped with the screen tray, and on the position of screen tray setting under the cylinder, screen tray slope sets up, and the higher one end of screen tray is passed through the spring and is connected with the baffle, and baffle and oval support connnection are equipped with the screen cloth in the screen tray. The cylinder both ends are passed through girder bearing structure and are supported fixedly. Through adopting above -mentioned structure, can realize the earth material screening of different particle diameters through two cylinder intervals of control to further dividing the sieve through setting up the screen cloth, providing a collection hack soil screening integrative earth material processing machinery device, the feasible earth material that arrives is broken even, once only obtains the earth material of multiple different particle diameters.