Abstract: Research purposes: Subsequent business development often exist around the existing subway station. Foundation pit construction adjacent tlie station has adverse influence for tlie structural deformation. Taking the complex foundation pit construction of Tianjin Tianhe Shopping Center as the background，by using three - dimensional numerical analysis，the calculations are made on the settlement value of two foundation pit excavation schemes for Peace Road Station of Tianjin metro line 3，the safety influence of two construction schemes on subway station structure is evaluated， which provides the basis for the selection of construction schemes. Research conclusions:(1) Under the combined effect of both foundation pit dewatering and excavation，the pit bottom will upheaval slightly，setting tank will appear around the foundation pit，and the subway station is given priority to the settlement deformation. ( 2 ) The original scheme can better control the deformation of the subway station. The final settlement caused by the adjusted scheme is slightly larger than the original scheme. ( 3 ) Both schemes can meet the control requirements of subway deformation. The construction period of adjustment scheme is reduced 3 months than the original scheme. After comprehensive comparison，the adjusted scheme is recommended. (4) According to the practical engineering for analysis，the study results in this paper can be applied in the treatment of tlie influence of foundation pit construction adjacent metro station.