Abstract: Objective: The Jialingjiang Road Station to Xiangjiang Road Station interval on Qingdao Metro Line 13 underpasses the longstanding buildings at line curve sections. Due to the tunnel shallow depth, weak stratigraphical conditions and high water content, it is necessary to analyze the potential impact of metro tunnel construction on the safety of adjacent buildings during metro tunnel construction. Method: A combination of numerical calculation analysis and onsite measurements is employed. Permeability tests are carried out under different water content conditions of clay soil layers. Corresponding models of the soil layers and buildings are established to simulate multiple excavation cyclic length working conditions, specifically focusing on shallowburied curved tunnel construction and its impact on existing buildings. Result & Conclusion: The permeability of clay soil is affected by water content, with higher water content leading to stronger permeability. The underpassing engineering of curved tunnel causes noticeable spatial variation in deformation of existing buildings, and partial area of which experiences more significant deformation and some areas with uplift. These variations are influenced by factors such as the tunnelling mode and the building morphology. The impact on the buildings also varies evidently depending on the tunnel excavation towards different locations beneath the buildings. The sequence of excavation for twin tunnels results in distinct deformation characteristic differences.