Abstract: The working resistance of hydraulic support in fully mechanized working face has a very important influence on the monitoring of the underground pressure of the working face. In this paper, through the theoretical analysis and actual observation of the work resistance data of 5.0 m hydraulic support under different mining conditions in No.4 panel of 12^# coal in Bulianta Coal Mine of Shendong Mining Area, the paper summarizes the strata behaviors of initial mining, normal mining and end mining in the fully mechanized working face of 5.0 m.