Abstract: The Damingtun depression Archean Anshan group and mideum - up Proterozoic Changcheng System crystalized bedrock is enriched with oil and gas,Indo- China,Yanshan and the Xishan mountain movement cause the depression bedrock to move toward northeast,and high,middle and low buried hill formed alternate distribution and parallel arrangement structure framework.Controlled with sufficient oil source and the good migration path,many kinds of reservoir rock type and the good reservoir space,fault multistage and early stage development and advantageous regional cap and so on,the depression bedrock bedrock has reservoir accumulation characteristics of"the whole oil-bearing,partial enrichment". Damingtun depression bedrock has the huge deepened exploration potential,and we should strengthen the advantageous accumulation area forecast and the preserved condition research to obtain the bigger exploration breakthrough.