Based on well drilling and seismic data, the characteristics and cause of lateral buried hill transformation belt are studied. The result shows that Raoyang buried hill transformation belt is based on Mesozoic differential tectonic erosion, formed by Cenozoic differential tectonic erosion; in response to different tectonic subsidence between tectonic units, which are above on bedrock detachment surface as a carrier, a series of buried hills collapse in order from east to west. Logging, oil test, laboratory analysis data confirm that buried hill transform zones are characterized by “multiphase filling of oil and gas in time, heterologous oil accumulation in plane, differential hydrocarbon accumulation in profile” and form multiple oil and gas accumulation zone, which are mostly buried hill hydrocarbon reservoir and the next is Tertiary hydrocarbon reservoir. Strong tectonic deformation of buried hill transform zones offer favorable conditions for formation of trap and reservoir. Under the guidance of “oil and gas differential accumulation principle”, we exact analyze the distribution of inner hydrocarbon reservoirs of buried hills in space and search for favorable exploration target and extend prospecting area of buried hill in Jizhong depression.