The invention discloses a horizontal active weeding wheel anti-blocking device used in a no-tillage seeding machine, and belongs to the technical field of agricultural machinery. The whole structure of the device consists of a frame and 2-8 horizontal active weeding wheel anti-blocking elements. The horizontal active weeding wheel anti-blocking elements are arranged in parallel on the square beamof the frame, with the same space from the left side and the right side of a gear box. The power output by a rear shaft of a tractor is transferred to all active square shafts of the horizontal activeweeding wheel anti-blocking elements by the gear box through a belt gear, which causes the horizontal weeding wheels to rotate horizontally on the ground surface to push the met straws to the area between two seeding zones. The weeding wheels are arranged right ahead a furrow opener to prevent the straws from blocking the furrow opener during furrowing operation. The anti-blocking device solves the problem of anti-blocking delay resulting from clearing only after the blockage of the traditional anti-blocking device, ensures the furrow opener finishes the furrowing operation on the straw-freeseeding zone, and is particularly suitable for no-tillage corn seeding machines.