Abstract: In line with the national deep-earth strategy of “exploring the deep earth for resources, space, and safety” , the Yunlong lake Laboratory of Deep Underground Science and Engineering has been established, drawing upon the strengths of China University of Mining and Technology and the innovative resources of local enterprises such as Xuzhou Mining Business Group, XCMG Construction Machinery, Xuzhou Metro, and DaTun Coal electricity company of China Coal Group. The laboratory has developed a research platform system comprising “1 center – 1 station – N bases,” with a 100 000 m³ large-scale underground research base that features multi-scale, multi-level, and geologically diverse layers. It has established four R&D platforms: Deep Earth Equipment, Deep Earth Development, Deep Earth Environment and Ecology, and Digital Deep Earth, driving systematic research and application verification in deep-earth science and engineering. This creates a research advantage through large-scale in-situ experiments and interdisciplinary integration. The Yunlong lake Laboratory looks forward to collaborating with domestic and international research institutions and enterprises, with the aim of providing scientific and technological support for safeguarding national energy and resource security and for the efficient utilization of underground space.