A two-stages analysis method for determining the pile effection induced by tunneling was uesd. In the first stage the Loganathan and Polous analytical solution was used to estimate the free settlement of soil subjected to tunnel excavation. In the second stage, firstly the free settlement of soil was applied to the single pile , secondly based on the Winkler model the settlement governing equilibrium equation of the pile was set up, lastly the theory resolution of the single pile suffered from tunneling was obtained by means of the method of variation of constant applied to homogeneous foundation and the finite diffierence method uesd to heterogeneous foundation .