Abstract: Aim at the weak rock characteristics of wanbei mining area, the breakage law of different location of weak surrounding rock is analyzed, it is concluded that the effect on the working face support from strong to weak, in turn, for the immediate roof, floor and coal seam and roof; Based on analysis on stiffness coupling, strength coupling and stability coupling of the fully mechanized working face. The supporting intensity is confirmed by roof timbering and surrounding rock integrity control. The determination method of setting intensity is put forward. The design requirements of hydraulic support in weak surrounding rock are completed. Mining practice shows that reasonable hydraulic support design can meet the requirements of fully mechanized mining face in weak surrounding rock.