Abstract:The characteristics in lithology,fracture development and erosion development were used to demonstrate the major characteristics for the Wu-6 Formation in Renqiu Buried hill.The sealingness difference between Nanmazhuang Buried Hill and the Renqiu Buried Hill was analyzed based on the overburden stratum characteristics,the tectonic evolution and the restraining barrier.The study results indicate that the separation layer in the Wu-6 Formation has sealingness,it can be a good seal,and the Nanmazhuang Buried Hill has a certain exploration potential.