Abstract: There must be omens before the occurrence of any coal-gas outburst. To prevent coal-gas outburst, this article, focusing on near misses, expounds on near-miss inducing factors and their mechanism. Using existing disaster theories, coal-gas outburst mechanism and prevention techniques, it proposes that coal-gas outburst is subject to four major factors inducing near misses, disaster bearing body, hazard inducing environment and the interaction format, and it further puts forward the description methods of coal-gas outburst disaster based on near-misses.