Abstract: For problems that information security protection measures of industrial Internet of coal mine were mostly applied to small areas and it was difficult to assess the whole information security risk, an information security risk assessment method of industrial Internet of coal mine was proposed which was based on static and dynamic dimensions. In the method, security protection regulations carried out in coal mine information systems are feature-transformed according to Information Security Technology-baseline for Classified Protection of Cybersecurity and GB/T 34679-2017 General Technical Specifications for Smart Mine Information Systems, and a correlation coefficient matrix of security protection requirements for each system is established, so as to calculate the number of security protection regulations which are actually carried out in the system. Then, a security risk assessment model is established by combining with risk number and probability of higher risk category, so as to assess information security risk of industrial Internet of coal mine. The test result shows that the method can effectively assess information security status of industrial Internet of coal mine, and guide coal mine enterprise to analyze information security risk and design and carry out security protection plan, so as to decrease information security risk of industrial Internet of coal mine.