Abstract: In view of the large buried depth，complex surrounding rock structure，poor stability and large deformation of roadway in the middle section of Huzhuashan Mine，based on the analysis and evalua⁃ tion of the geological characteristics of surrounding rock，it provides guidance for underground mining and surrounding rock control.The main conclusions are as follows:①The ore type of Huzhaoshan ore block is mainly lead-zinc-sulfur type.The surrounding rock of the upper wall of the ore body is mainly Gaolishan Formation sand shale and Huanglong Formation limestone，and the lower wall of the ore body is all Huan⁃ glong Formation limestone.②Huzhuashan ore body hanging wall rock stability，ore body footwall rock sta⁃ bility is good，mining engineering geology is medium type.③The compressive strength of the hanging wall rock is 13.1~177 MPa，but the roof rock may be unstable when the structure is broken，the lithology is poor and the strength is low.④The arrangement of the transport roadway in the hanging wall of the mine section needs to consider the deep high ground stress situation，and formulate the corresponding support measures for the roadway roof.

Key words: deep mining, engineering geological condition, earth pressure