Abstract: Distribution feature of remaining oil is one of the key problems to beresolved by development geological work of oil field. The article describes the distribution feature of remaining oil of substrata in Block Hu12, western slope in Dongpu depression semi-quantita-tively on dynamic analysis and studies the distribution feature of remaining oil in bed plane, interlayer and intrastrata. Methods of tapping the potentialities are found on four distribution types of remaining oil and the necessary evidence are provided for tapping the potentialities during high water-bearing oil field.