Abstract: With the development of urban construction and the great demand of land in cities,construction loads are always applied to and exert disadvantageous effect on longitudinal deformation of adjacent metro tunnels.A numerical model was established for analysis of their effects,and the problems were solved by use of finite difference method.Effects of load locations,embedded depths of tunnels,geologic conditions and diameters of tunnels on settlement and internal force of tunnels were studied.Some useful conclusions were obtained.