Abstract: The construction of smart coal mines is the only way to realize the transformation,upgrading and high-quality development of coal industry. In view of the current situation for the lack of systematic and forward-looking top-level design in the preliminary stage of smart coal mine construction in China,this paper conducted a systematic study on the top-level design of smart coal mines and expounded the goal and the stage tasks for the construction. Smart coal mines should be divided into three stages of digital fusion interconnection,man-machine active interaction,and the main system self-learning decision-making to build the integrated ecological circle of people-oriented intelligent pro- duction and life coordinated operation and realize the highly integrated coordination of material,information and busi- ness. Based on the analysis of coal mine value activities,the paper studied the logic relation of the complex giant sys- tem of smart coal mines,and put forward the top-level design of smart ten main systems of underground coal mine, which takes the smart system of management and control as the core,takes the 5G fusion network and the big data cloud platform as the main support and realizes the perception,analysis,decision-making and control of the whole process of coal mine development,production and operation. The smart ten main systems of underground coal mine in- cludes coal mine intelligence center and integrated management system,safety and strong real-time communication net- work and precision location service system,geological security and 4D-GIS dynamic information system,man-machine cooperative fast tunneling system, independent smart mining system, environment perception and safety closed-loop control system,smart system for coal flow and auxiliary transportation,unattended smart washing system,unattended operation system for fixed place and smart industrial park system. Based on the research on the relation between data features and correlation,the paper put forward the smart coal mine information entity feature and extraction method, and studied the smart coal mine knowledge map construction and data interactive push method to construct the smart coal mine digital logic model. The data processing architecture of “Cloud-Edge-Device” and the three-layer hierarchi- cal control strategy of the smart coal mines were proposed. Based on the above research,the practice of smart coal mine construction,including a smart transformation for Zhangjiamao coal mine and a comprehensive and smart construction for Balasu coal mine,was carried out,which provided a demonstration for the smart coal mine construction.