Abstract: Coal,oil and natural gas are coexisting in the Weibei Basin.According to the component and carbon isotope characteristics of natural gas and combining with organic matter types,thermal evolutionary stages and other data of hydrocarbon source rocks,natural gas was classified into bacteriogenetic gas,bacterial-mature oil-typed gas,low mature coal-oil-typed gas,mature oil-coal-typed gas,coal typed gas and other six genetic types.It is clear that different types of natural gas take WE zonal distribution planarly on the whole,that is,high-mature coal-typed gas,mature oil-coal-typed gas,low mature coal-oil-typed gas and bacteriogenetic gas from north to south in turn.The revealment of distribution rules for various types of natural gas provides an important basis for the exploration and development of natural gas in the area.