In order to solve the problem of controlling the surrounding rock of the gangue gangue in the fully mechanized mining face with large mining height. Taking field experiments and theoretical analysis as the main means, two types of gangue gangue support schemes, totaling 4 groups, were designed, and the deformation laws of gangue gangway under different roof support resistance conditions and different gangue gangue resistance conditions were discussed, and established. The displacement of the gangue gang under different gangue support conditions changes to the mechanical formula. The results show that: (1) the deformation value of gangue gangue and the deformation value of coal gangway in the roof-cutting entry retaining area supported by unit supports are both smaller than those in the roof-cutting entry retaining area supported by single pillar and roof beam; (2) The root cause of U-shaped steel slip is that The tensile stress or compressive stress is greater than the critical friction force of the overlapping part of the U-shaped steel; ③ The greater the rigidity of the U-shaped steel for the gangue gang support, the smaller the bending deflection of the gangue gang; Good blocking effect. This study can provide a reference for the support of gangue gangue under the same conditions.