Abstract: Baode Coal Mine adopts fully mechanized caving technology with large mining height to mining No.8 coal seam, with 3.8 m coal cutting and 3.5 m coal caving. During the mining process, the hydraulic support resistance of the working face is large and the support is crushed. Based on the sequence of overlying strata of 81305 working face in No.3 panel of Baode Coal Mine, this paper studies the ground pressure of working face through field measurement and similar simulation, analyzes the stability of strata structure according to the strata sequence. Under the multi-layer thick and hard overlying strata sequence, the overlying strata formed different overburden structures in the mining process of the working face. According to the strata sequence, the overburden structure is divided into short-cantilever beam structure and voussoir beam structure. The short-cantilever beam plays a leading role in the strata behavior of the working face. The fracture of the thick and hard strata above the coal seam formed a short-cantilever beam which made the support crushed. The analytical formula for determining the support resistance is given through analysis of the stability of strata structure, and the support resistance should not be less than 18 000 kN.