The utility model discloses a real -time online temperature measurement system of distributing type, in at least one is used for the cubical switchboard female arrange the passive antenna temperaturesensor A that carries out temperature data collection, at least one be used for the cubical switchboard in breaker moving contact temperature data collection's passive antenna temperature sensor B andthe passive antenna temperature sensor C that at least one is used for carrying on temperature data collection to outdoor switch temperature carry out, passive antenna temperature sensor A, B, C correspond respectively and passive sensing emit antenna carries out wireless connection, every passive sensing emit antenna passes through the radio frequency cable communication and connects the temperature data collection ware, every temperature data collection ware passes through RS485 bus communication and connects the switch, and the switch is through connecting backstage monitored control system or long -range monitored control system with the ethernet communication, the utility model discloses simple structure, receive and release the convenience, the space that occupies is little, move reliable and stable, the ability realize all kinds of real -time on -line monitoring that are located the device temperature that generates heat in narrow and small space among the power equipment fast.