Abstract: Aimed at a series of field management problems such as high roof pressure, difficult roof control and floor heave in the process of fully mechanized face with large mining height.Taking Bulianta Coal Mine as an example, this paper introduces the determination method of working resistance of support, roof control method and roof control in the process of fully mechanized face with 7 m mining height.It provides a certain reference for the roof management of fully mechanized face with large mining height under similar geological conditions.