Coal is the main energy in China, and its dominant position will not change fundamentally in the next 30 years, but with the reform of the coal supply side structure, coal enterprises face the pressure of reducing production capacity. Because of the complexity of coal industry production conditions and the complexity of coal management structure, coal enterprises have an urgent need for data management and business decision-making. Therefore, this paper combines the information foundation of the current large coal energy enterprises in the development of big data, discusses the application of big data in enterprise intelligent decision-making, according to the actual production and operation data of BT coal department of National Energy, creates the production constraint model, monthly coal supply and coal purchase calculation model and decision-making model. The model is deployed to the server and applied to coal mine WL and coal mine LJH. The results show that the model performs well. The validity of the model is verified by empirical analysis of the actual data of coal mine.