Abstract: By fully use of core data,well logging curve,total organic carbon content of source rocks,hydrocarbon source rock pyrolysis,hydrocarbon source rocks of vitrinite reflectance data,etc.,the study on distribution regularities of high-quality source rocks in Chang-7 reservoirs of WuqiZhidan region has been carried out.And the hydrocarbon generation potential has been evaluated. The evaluation standard of high-quality source rocks has been established and the distribution range of preferable source rocks has been made clear.The study results indicate the source rocks in Chang-7 reservoirs have high organic matter abundance and high hydrocarbon generation conversion rate.Therefore,it has a good hydrocarbon generation potential and the preferable source rocks are mainly distributed in Fanxue area in the southwest and Maying area in the south.