The utility model relates to a machinery screening plant field discloses a rocking sieve for sieving solid material, and this rocking sieve should sieve the unit and include the sieve basket including the screening unit that sieves out the solid material of different particle diameters, and screen cloth support and screen cloth should sieve the unit still including setting up the top of said discharging pipe and/or the baffle of below, this baffle can be for the discharge gate of discharging pipe motion in order to shelter from the discharging pipe at least in part in the radial orientation of discharging pipe the utility model discloses a rocking sieve through the top at the discharging pipe and/or below set up can be in the radial orientation of discharging pipe for the baffle of discharging pipe motion with the discharge gate that shelters from the discharging pipe at least in part to can make solid material only discharge from the part of not sheltered from by the baffle of discharge gate, consequently not only can once sieve through the screen cloth solid material, can also carry out the secondary screening through adjusting the bezel, thereby improve the yield that solid material's screening precision improves solid material