At present,the number of large underground tunnel projects such as the West-East Gas Pipeline is increasing,and the demand for safety monitoring of tunnel surrounding rock structure is becoming more and more urgent.This paper introduces in detail the development and application of an automatic monitoring system for the deformation of tunnel surrounding rock structure.The system adopts multi-sensor integration technology,which can monitor various changes of surrounding rock in real time and comprehensively,and quickly process and analyze the collected data through high-speed data processing platform.The system also has real-time prediction and alarm functions,which can detect and deal with potential risks in a timely manner.In addition,the system adopts modular and extensible design,which provides customized monitoring schemes for different tunnel construction projects.Through practical application verification,the system has achieved remarkable results in improving monitoring efficiency,ensuring construction safety,and saving costs.