According to the standard noise measurement technology of multi-channel signal transmission in full network communication, the key technology of multi-channel signal transmission noise monitoring in all network communication is put forward. Through the signal transmission environment noise signal acquisition, the whole network communication multi-channel signal transmission noise remote real-time monitoring, historical data view, over-standard alarm and field storage and other functions of processing. The structure and operation steps of the multi-channel signal transmission noise detection equipment are optimized. Finally, it is proved by experiments that the multi-channel signal transmission noise monitoring technology of all-network communication has better effect in the practical application process. To meet the research requirements.