In this paper， the PCCP pipeline in the middle line project of South-to-North water transfer（Beijing section）as the main research object，the stress and strain monitoring of its different sections，and then through the monitoring data analysis of the overall situation of the scale，deformation trend，to obtain the project in the water transport period of the operating state of the important parameters.The results show that the change of strain value of PCCP pipeline encapsulation and pier structure shows the correlation with strong temperature，and the strain measurement value of concrete is generally low，and the engineering operation state is stable and safe.The monitoring results can provide the decision-making basis for the operation management unit to implement scientific management，master the actual operation state of the project and play the role of monitoring and early warning.