Abstract: In order to solve the lectotype problem of hydraulic supports for 6 upper fully mechanized caving face in Huangyuchuan Coal Mine and achieve the goal of safety, efficiency high yield and high recovery mine of 10 Mt, through theoretical analysis method, numerical simulation method and engineer analogy method, we researched the support lectotype and the reasonable support resistance of the supports. Results show that 6 upper seam fully mechanized caving face adopts four leg low caving chock shield properly, the reasonable support resistance is 21 000 kN.