Abstract: Numerical simulation analysis method is empoyed to study the mechanical behaviors of segments of connecting passage of a shield tunnel. The general construction method and process of the connecting passage are introduced. Through field monitoring analysis and three-dimensional finite element analysis, the force and displacement characteristics of the get the contact channel, segments during construction of the connecting passage and after hole-opening are obtained. The results show that during: construction of the connecting passage and after hole-opening, the horizontal additional displacement of the shield segments is generated, towards the direction of the connecting passage. Owing to the construction of the connecting passage, the original forces of the segments lead to stress redistribution of the Most of the segments at the side openings will produce negative tension forces, and it will seriously affect the safety of the shield tunnel. To this end, temporary support reinforcement measures for the shield tunnel segments are proposed. This study has the reference value for similar projects.