Abstract: Excavation arouses displacement of surrounding soil. It’s important to control the deformation of excavation engineering with complicated surroundings. The flow chart of excavation deformation control is put forward. Comprehensive measures should be taken to control the excavation deformation from the aspects of environment survey, deformation control design, construction control, monitoring, etc. For the excavation engineering with complicated the surroundings, the surrounding environment should be surveyed before excavation design, and deformation control index should be determined according to the requirements of surrounding protection. In excavation design, the additional deformation caused by excavation should be estimated by empirical methods or numerical methods, and the total deformation should be less than the allowable value. If the estimated deformation is greater than the control value, necessary reinforcement and isolation measures should be taken. In the construction process of excavation, measures should be taken to protect the surroundings form the perspectives of construction of retaining structure, groundwater control and earth excavation. Monitoring of retaining structure and surroundings should be strengthened in the construction process of excavation in order to carry out informationization construction, and dynamic design and construction should be done in necessity.