The present invention provides a temperature measurement early warning system of a distribution network cable terminal head. The system comprises an electricity-taking module, a temperature sensor module and a wireless terminal; the temperature sensor module is connected with a data acquisition analysis module, the data acquisition analysis module is connected with a first processor module, and the first processor module is connected with a first wireless communication module. The wireless module includes a second processor module, a liquid crystal display module and a second wireless communication module which are installed in the housing, and the second processor module is connected with the liquid crystal display module, the first wireless communication module and the second wireless communication module. The temperature measurement early warning system of a distribution network cable terminal head solves the problems that the number of temperature measurement of cable heads is too large and it is difficult to complete according to the requirement in the prior art, and is able to realize real-time monitoring of cable terminal heads and full covering of temperature measurement points through adoption of an intelligent temperature measurement mode so as to ensure the timeliness, the reality and the validity of temperature measurement data.