Abstract: In allusion to the problems concerning single monitoring means, inconsistent communication protocols and low data accuracy, etc. existing in the current power cable body and environmental condition monitoring, the intelligent monitoring system of power cables is built based on the internet of things technology,relying on the application of multi-sensor combination, edge computing, intelligent identification, Docker container and other technologies, which realizes the in-depth perception and real-time monitoring of cable partial discharge, sheath circulation, temperature and pipe gallery environment, improves the intelligent online monitoring level of cables, and reduces the construction, operation and maintenance costs of pipe gallery.