Sedimentary environment and coal accumulating rule of carboniferous Permian 二1 coal in Huangzhuang exploration zone were studied with methods of sequence stratigraphic analysis, depositional environment analysis and logging curves analysis as well as taking coal geology and sedimentary geology theory as guidance. The result showed that 二1 coal formed at edge of delta tidal flat facies; 二1 coal which formed in tidal flat deposits that developed in coastal plain environment had characteristics of large coal seam thickness, good stability and wide distribution; the thickness of the coal was affected by difference of tidal flat sub environment between development of coal swamp and duration of formation. Sheet flow erosion was the factor causing thickness of 二1 coal to be thinned in northern region. And distribution of 二1 coal in the area was: medium thickness coal seam mainly concentrated in eastern and the southern part, thickness of northern coal seam gradually thinned; After formation of 二1 coal, thickness and distribution of coal seam were affected by geological structure function.
