Coal-gas outburst is a serious threat to the safety production of coal mine.However, the systematic in-depth study to the formation mechanism of gas outburst coal is scarce.Gas outburst coal which is consisted by heav-ily damaged deformed coal delamination and high-energy coal seam gas, has coal-gas outburst danger in coal seam. Focusing on deformation-metamorphism of coal, the physical conditions and process of gas outburst coal forming were revealed based on the references and previous researches of authors.It was summarized as follows: heavily damaged deformed coal and abundant gas accumulation in coal seam, are the material basis of gas outburst coal forming;the dynamic basis of gas outburst coal forming include tectonic stress and gravity, adsorption/desorption, gas slipping and wedge actions;the main characteristics of gas outburst coal forming are coal body failure, gas ac-cumulation and closed compaction.The research plays an important role on the prediction and prevention of coal-gas outburst hazard in complex geological environments.%煤与瓦斯突出灾害严重威胁着煤矿安全生产，但目前对煤与瓦斯突出的物质载体形成机理研究鲜有报道。瓦斯突出煤体系指含有高能瓦斯且以强烈韧性破坏为主的构造煤体，具备发生煤与瓦斯突出的固体和气体介质条件。以煤体变形变质为主线，综述相关文献并结合研究积累，分析揭示了瓦斯突出煤体形成的物理条件和过程：煤体结构严重破坏的构造煤、积聚于此的大量瓦斯，是瓦斯突出煤体形成的物质基础；构造应力与重力、吸附／解吸作用、气体增滑与气楔作用，是瓦斯突出煤体形成的动力基础；煤体破坏、瓦斯积聚、封闭压实，是瓦斯突出煤体形成过程的主要特征。本研究对复杂地质条件下区域瓦斯预测防治具有重要指导作用。
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