The two-stage method is used for analyzing the pipeline deformation caused by the underneath shield tunneling. In the first stage, the Loganathan formula is modified for studying the ground loss when the tunnel axis intersection with the pipeline axis is not orthogonal. The soil-pipeline interaction is studied based on the Vlasov model in the second stage, and the pipeline deformation is also obtained. Then, through comparison with the finite element results, the proposed method was verified to be correct. The influences of pipeline diameter; tunnel depth and intersection between the tunnel and pipeline on pipeline deformation have been further studied. The parametric study shows that the intersection angle of the tunnel and the pipeline significantly influences the pipeline horizontal displacement, and the pipeline deformation increases remarkably as the intersection angle decreasing. The parametric study indicates:a. the pipeline horizontal displacement can't be ignored compared to the pipeline vertical displacement when the intersection angle of the tunnel and the pipeline is relatively small; b. the pipeline deformation is weakening as the pipeline diameter and tunnel depth increasing.