The article reviewed the research results of the adjacent tunnel affected area and corresponding countermeasures, investigated the relevant design and construction experience of domestic overlapping tunnel. Aiming at the overlapped four-hole tunnel that Beijing Metro Line 19 Financial Street Station to Pinganli Station and Line 3 Fuchengmen Station to Pinganli Station, the influence on the deformation of the existing upper tunnel caused by the excavation of lower tunnel was studied. several design and construction technical measures for the actual situation was proposed. The construction process was analyzed with MIDAS-GTS, and the influence of construction stage on the existing structure, surface settlement and the change process was discussed. The research indicates that it is feasible to design and construct overlapped four-hole tunnels in Beijing by taking measures such as advanced grouting, strengthen the stiffness of initial support and permanent support, strengthen the interlayer soil, which can meet the tunnel design requirement. It can provide some guidelines for the design and construction of similar projects.