The invention discloses a drum sand screening machine for construction, which comprises a hopper, a turning arm, a motor I, a motor II, a motor III, a drum, a baffle I, a baffle II, a transmission device, Frame, transmission device frame, baffle IV, chain drive, gear III, gear IV, eccentric wheel; motor I is installed on the side below the hopper, and a turning arm is installed on the side of motor I, and motor I is installed on the bottom of the hopper On the outer wall, the motor I is connected with the turning arm to drive the turning arm to rotate in the hopper. The invention avoids the material blocking in the hopper, ensures the working efficiency of the drum sand screening machine, and prevents the materials moving with the drum from spilling outwards, reduces the manual workload in the later stage, and changes the drum The original motion trajectory realizes better separation of materials and increases the working efficiency of the drum sand screening machine.