Abstract: Vibration monitoring and early warning of underground pipeline excavation is a new application technology,which is mainly used to establish a monitoring and grading early warning system for underground pipeline excavation damage during operation.The technology is based on vibration mechanics and uses mature vibration testing technology to monitor,analyze and judge the vibration parameters of the surrounding environment （excavation） of underground pipelines.The real-time state and the safety state of the surrounding environment of the underground pipeline can be obtained.Combining the vibration monitoring technology of vehicle and machinery with the vibration monitoring technology of soil,the paper puts forward a new technical idea of the monitoring system,and preliminarily verifies its feasibility through the test.The monitor system can give an early warning in time before that underground pipeline is damage by excavation.The operation and maintenance personnel can take corresponding measures according to the monitoring data and the graded early warning situation,and effectively solve the problem of insufficient emergency protection time when the underground pipeline is broken and excavated.