Abstract: The metro construction environment is complex and there are many engineering constraints. When mechanical method is adopted for construction,it is often faced with technical problems such as poor continuity of mechanical excavation,interference between mining method station and mechanical method interval construction, and mechanical launching,station crossing,receiving,translating,hoisting out. Based on civil engineering 03 standard project of Qingdao Metro Line 6, comprehensively considering the ground environment and geological conditions along the line,the construction methods and construction sequence organization of each station and the overall engineering scheme of the line,through continuous refinement, comparative selection,optimization and adjustment of the preliminary technical engineering scheme,a complete set of technical engineering scheme suitable for complex construction environment has been formed for metro constructed by mechanical method.