Abstract: From Muli Coalfield tectonic evolution,the development mode of coal basin and the analysis of Coal-bearing Depositional System,deposition law of the Muli Coalfield are summarised.The main coal-bearing strata belong to Jurassic Series Jiangcang and Muli Formation,in which the middle Jurassic Series Muli Formationthe is almost the mining area of the main coal bearing strata.From the late three Triassic to the early Cretaceous,the coalfield experienced Indosinian,Yanshan during the period of tectonic movement,the coal-bearing basin formation and development play a controlling role.The coal-bearing strata in the formation of the sedimentary environment or geomorphologic landscape is formed as open sluice lake environment of the intermontane basin.Based on analysis and research of coal-bearing strata of Juhugeng mining area in Muli coal field,we put forward the unified plan of the coal-bearing strata division and the mining coal seam comparison of Juhugeng mining area in Muli coalfield.Therefore,it typically solved the unclear phenomenon in division and comparison of Muli coal-bearing strata.It has laid a good foundamental for correlation of the coal seams.