Mud shale in Upper Es4 to Lower Es3 Members of Jiyang Depression has complicate composition and structural heterogeneity，and controlling factors of reservoir property difference are unclear，restricting the progress of shale oil exploration. Bedding structures in mud shale characterized by rich carbonate in Upper Es4 to Lower Es3 Members of Jiyang Depression can be divided into 10 types by using thin slice analysis data. Results show that types of B，C and D are the most developed in mud shale，which proportion can reach 80%. By analyzing and observing pore types of mud shale matrix through thin section and argon ion polishing-scanning electron microscopy，the main pore types in the study area are considered to be rigid intergranular pore，organic matter and clay shrinkage pore，and carbonate intergranular pore. According to the bedding structure type，G，H，B and D have the best reservoir property，followed by E and F，A and C，and other types are the worst. By analyzing the controlling factors of mud shale reservoir property of different types of bedding structure，the mineral composition plays a leading role in controlling the degree of pore development in mud shale with muddy crystal structure carbonate. Bedding structure strongly affects the degree of pore development in mud shale with carbonate grain structure（including columnar fiber structure）. According to the analysis of mud shale oil production section，it is clear that the further main exploration direction should be to turn to mud shale of G，H，B and D types with 30%-50% carbonate content，and it is preferable to consider shale sections with more concentrated G and H types with carbonate content meeting the above conditions.