The basic theory and thought of grey association analysis are introduced. The correlation coefficient, correlation degree and weight coefficient are obtained more reasonably and accurately through quantification of resolution coefficient. Taking X fault-block reservoir for example, five static and dynamic parameters which can influence remaining oil distribution are selected as evaluation index to expound the computation process of weight coefficient of each parameter and own grading, and a comprehensive score for remaining oil distribution is obtained. The evaluation result coincides with the actual production, which proves that this method can be applied to the remaining oil distribution evaluation in the later development.