Abstract: The deformation of adjacent structure caused by shield construction is an issue of great concern in the design and construction of shield tunnel. Based on a bridge pile construction project on Beijing Metro Line 14 that crosses sideways of Beijing-Tianjin Intercity Railway in the tunnel between Fangzhuang Station and Shilihe Station, a three-dimensional space model is established by using the professional finite element analysis software Midas/GTS, in order to simulate the construction process of the shield tunnel side-crossing the bridge pile project on Beijing-Tianjin Intercity Railway. Combined with the construction situation, pre-treatment measures are proposed, and through calculation, comparison and analysis, reasonable reinforcement measures and reinforcement scope are provided.