Bi-directional communicative remote intelligent method of monitoring coal-fired boiler

A bi-directional communicative remote intelligent method of monitoring a coal-fired boiler. The method comprises: obtaining on-site operation data of a coal-fired boiler (S100); processing and then transmitting the on-site operation data to a network server (S110); calculating, by the network server, power consumption based on the on-site operation data to obtain thermal efficiency data (S120); performing safety condition evaluation based on the on-site operation data to obtain a safety condition level (S130); and generating, by the network server, an operation optimization scheme according to the thermal efficiency data and the safety condition level (S104), and feeding back the same to the operation site. The method realizes bi-directional data communication, and provides an operation optimization scheme according to on-site operation data of a coal-fired boiler.