Abstract: Objective: Targeting the conventional pipeline layout problems such as numerous pipeline intersections and operationmaintenance difficulties in archcover method station (abbreviated as ACS) equipment area, a brand new interlayer pipeline design is proposed. Method: The spatial characteristics of ACS, key points and major problems of conventional pipeline layout in ACS equipment area are analyzed. The concept of pipeline interlayer design for the above area is introduced. The design scheme and implementation effect of the pipeline interlayer in ACS equipment area of Qingdao Metro Line 1 are presented, and engineering experience from the project implementation is summarized. Result & Conclusion: The spacious curved space of the concourse level roof in ACS allows the placement of pipeline interlayer above equipment rooms, overcoming limitations for HVAC, water supply and drainage as well as fire pipelines to pass through electrical room; with the concept of physical compartmentalization, strong and weak current specialized trays are physically isolated from the aforementioned systems, avoiding intersections between different disciplines and reducing ventilation duct air resistance. Arranging pipeline interlayer can lower the equipment room partition walls, avoiding the need for multiple structural ring beams. This improvement increases the efficiency of constructing partition walls, nearly doubling the pipeline installation speed. Additionally, the height of equipment area corridor ceiling is increased, reducing the number of pipelines above the corridor and improving the overall spatial atmosphere within the corridor. Adequate maintenance space is reserved in the middle space above pipeline interlayer, reducing difficulties in later operationmaintenance. The engineering practice of the pipeline interlayer at Qingdao Metro Line 1 Shuiqinggou Staion validates the feasibility and superiority of the pipeline interlayer design concept and scheme, which is promoted and applied in ACS of Qingdao Metro phase III construction.