Taking the drainage channel project of Wuhan as research object, the finite element analysis software PLAXIS is used to carry out numerical simulation of the construction process of double-wall tunnel. The deformation response and surface deformation law of different circular excavation footages and different excavation order are emphatically analyzed, and the construction scheme of double side heading method tunnel is optimized. The results show that the surface settlement and vault settlement calculated by the cyclic footage of 4 m are significantly greater than those calculated by the cyclic footage of 1 m and 2 m. The excavation order 1 ( I → II → III → IV → V → VI ) has less influence on ground disturbance than excavation order 2 ( I → III → II → IV → V → VI ). Compared with the calculation results, considering the factors of construction safety and construction efficiency, it is suggested that the circular footage of the tunnel should be 2 m and the excavation order should be selected in 1 ( I → II → III → IV → V → VI ). The study could provide design references for underground tunneling engineering under similar stratum conditions in Wuhan area.