Abstract: Taking 8701 fully mechanized mining face of 11^# coal seam in Sitai coal mine western panel as research object,this paper firstly analyzes the geology and roof conditions of coal seam,and develops the content and methods of rock pressure observation.The roof of fully mechanized mining face,advance support monomer columns in end of two crossheading roadways and hydraulic supports are real-time monitored and analyzed,and the strata-pressure behavior regularity is summed up according to the actual analysis.