Abstract: Based on the industrial test of cutting roof and retaining roadway mining in Ningtiaota Coal Mine, this paper designs two kinds of supporting schemes for retaining gangue, and compares and analyzes the deformation amount of bulk body and lateral pressure under the two supporting schemes. The results show that the lateral pressure of the pier support is smaller than that of the single oblique support and the effect of controlling the lateral displacement of the roadway side is obvious. The research results provide a new support idea for the deformation control of the loose side in the process of roof-cutting and retaining roadway mining.