Abstract: Intelligent management is an integral part of intelligent mine construction. The main problems of information management in large coal groups are analyzed, including the weak processing capability of management platform for heterogeneous data, the lack of dynamic integration of spatial characteristics information in business systems, the inability to conduct intelligent analysis of 'human, machine, environment and management', and the lack of collaborative early warning and linkage functions based on work flow and big data analysis. To address the above problems, the overall design scheme and architecture of intelligent management system of large coal groups are proposed. The key technologies such as heterogeneous data processing, model database and knowledge database construction, big data analysis and control collaboration adopted during the system construction are described. The system has been applied in the headquarters, secondary companies and subordinate mines of Henan Energy & Chemical Group Co., Ltd. and has improved the work efficiency of management positions by about 20%, reduced the work intensity of dispatching statistics and monitoring positions by about 35%. The system has achieved the system construction goals of platform standardization, space-time integration, intelligent analysis and management coordination, and improved the intelligent management level and decision-making efficiency of large coal groups.