Abstract: From the point of view of the data about the formation and evolution of the basin,the paper discussedthe structural styles in eastern Linqing depression.Altogether 7 types of structural styles and their superposition related to hydrocarbon accumulation were identified in the half-graben,along with an approach totheir genetic mechanism and distributive features.Finally the paper proposed the favourable explorationtargets in the region,after an analysis of the accumulative characteristics of hydrocarbons,on the basis ofthe conditions of source,reservoir and cover.