Research methods: Monitoring survey technique was applied in the monitoring of wall and supporting of the YingKouDao station construction in phase 1 project the deformation of the supporting structure and the development of the surrounding was mastered. This paper introduces about the significance, content of urban deep pit deformation survey, the layout of survey spots, data survey, etc. By executing the survey of deep pit deformation, the paper recommends relying on the dynamic information feedback of deformation survey to ensure the construction safety and optimal design of deep pit. Subsequently, corresponding technologic measures of how to control deformation in pit were proposed and fully applied to the construction in phase 1 project. Good effects were achieved in guiding Tianjin Metro construction at the same time some valuable conclusions were obtained.