The utility model provides a power distribution ring network cabinet temperature measuring device based on internet of things, includes power module, sensor module, central processing unit module, thing networking transport module, data storage module and GPRS communication module. The central processing unit module is junctional complex networking transport module, data storage module and GPRS communication module respectively, data storage module connects GPRS communication module, thing networking transport module connects sensor module, sensor module passes through radio communication and connects the central processing unit module, power module connects and supplies power to all the other modules. Adopt modular system architecture, simple structure, the configuration is nimble, can carry out the whole journey monitoring to contact temperature in the power distribution ring network cabinet working process, and signal acquisition is stable, reduces the working strength of artifical temperature measurement, improves the operational reliability of power distribution ring network cabinet.