Abstract: Pipelines are buried underground or supported by supports at every section of distance.The resuh of stress analysis may become unreliable due tO boundary conditions and full of liquid inside the pipeline. Taking the state characters(geometry features, material quality, load properties, stress analysis properties and SO on)of a pipeline unit for a base example, the axial, circumferential, 45° directional Strain and maximum main strain are analyzed, and with the help of elastic damage theory tO access the safety state of pipeline in the testing area and gain the theory of pipeline mechanics monitoring based on the Stress testing technique, which is considered as a reference of experiment.