The invention relates to a sandstone dual-layer push-and-pull guide plate which is arranged in a sedimentation hopper and comprises an upper layer and a lower layer, namely an upper guide plate and a lower guide plate, wherein a spacing is reserved between the upper guide plate and the lower guide plate; the upper end of the upper guide plate is fixedly arranged on a bracket, the upper end of the lower guide plate is movably arranged on the bracket in a penetrating manner, and the bracket is provided with a driving device capable of pushing the lower guide plate to move up and down; upper filtration holes are uniformly distributed in the upper guide plate, lower filtration holes are uniformly distributed in the lower guide plate, the pore diameter of the upper filtration holes is greater than that of the lower filtration holes, and the upper filtration holes and the lower filtration holes are distributed in a staggered manner. The guide plate is of a dual-layer structure; double filtration is performed on sandstone, and the upper and lower filtration holes are different in thickness; during filtration, the lower guide plate is pushed to move up and down, so that push-and-pull filtration on the sandstone during secondary filtration is realized, blockage of the filtration holes is avoided, and the filtration effect and the filtration efficiency are improved.