In order to reveal the influence of the driving slope of the ground access shield method on the longitudinal force and deformation distribution of the tunnel structure, the cross-river tunnel project of Longshui South Road in Shanghai is taken as an example to analyze with the mechanical behavior laws by establishing a three-dimensional finite element model. The results show that: 1) The circumferential earth pressure acting on the tunnel is affected by the change of burial depth caused by the change of driving slope and the change of earth pressure decomposition angle. 2) With the increase of driving slope at the same buried depth, the vertical convergence deformation of the tunnel structure gradually decreases, but the longitudinal convergence deformation difference increases. 3) The increase of the driving slope makes the circumferential stress of the tunnel structure more uniform, and gradually tends to the hydrostatic pressure state. 4) The difference in stiffness between rings will increase the influence of the driving slope on the longitudinal difference convergence deformation of the tunnel. The results can provide some references for the lining deformation control of surface access shield tunnels under different driving slopes.