Fuzzy mathematics is introduced in fuzzy cluster, and the fuzzy relation between samples is quantified in fuzzy cluster, so fuzzy cluster is more objective and accurate. Fuzzy clustering is applied in coal and gas outburst prediction in the paper. The drilling cuttings desorption index K1, maximum drilling cuttings quantity S, electromagnetic radiation intensity maximum etc index of different place are considered in the classification, and different categories is classified according to

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... t levels of intercept. According to analogy, coal seam can be judged if it is outburst coal seal. The study can provide reference for coal and gas outburst prediction.