The online energy consumption monitoring system adopts the Internet of Things technology to realize the accurate measurement, collection, transmission and analysis of various energy consumption data such as water, electricity, gas and heating. With the help of big data and artificial intelligence methods, combined with loop operation data analysis, key equipment energy consumption analysis, expert advice, etc., it help companies analyze and mine energy use data, guide companies to cut peaks and fill valleys, reduce energy consumption, and reduce expenses so that ensure the safe operation of equipment, realize the improvement of production performance, and achieve the goal of safe production, optimal energy use, and optimal payment.