Chang 8 reservoir in Zhen 53 well field is one of the key horizons for exploration, evaluation and development in Zhenbei region, Ordos Basin. Based on core description and well logging data analysis, it is considered that the main sandstone in the studyarea is feldspathic litharenite, and the reservoir ismainlydelta front. Themain sedimentarymicrofacies include subaqueous distributary channel, mouth bar and distal bar. The subaqueous distributary channel sands and mouth bar constitute the dominated reservoir. The relationship between sedimentarymicrofacies and reservoir physical property is analyzed. The result shows that the reservoir physical property is controlled by sedimentarymicrofacies, and the subaqueous distributarychannel is the favorablemicrofacies.