Abstract: Aiming at a series of questions of dramatically emerged mining pressure, serious rib spalling and poor roof control effect on large mining height face in deeply buried hard coal and rock, takes the 3^-1101 large mining working face of Hongqinghe coal mine in Inner Mongolia as an example.This paper introduces the observation scheme and implementation method of the large mining height face in deeply buried hard coal and rock.Through on-site observation and related data analysis, the regularity and characteristics of mining pressure, working state of hydraulic support, rib spalling and other results of this working face are obtained.The corresponding safety technical measures and suggestions are put forward, in order to effectively meet the requirements of controlling the roof and rib spalling on large mining height face in deeply buries hard coal and rock.It is a better reference for safe and efficient mining of similar coal seams in Dongsheng coalfield.