Abstract: As the petrophysical properties of carbonate reservoir cannot be easily identified by core and logging,the seismic reflection was always weak because of small difference between acoustic impedance,the carbonate reservoir prediction has always been a difficulty in oil and gas exploration.By taking Carboniferous carbonate rock at the east margin of PreCaspian basin as an example,based on different types of carbonate reservoir of micro and macro characteristics difference,the litho-facies association and different reservoir spaces were predicted.The prediction covered limestone reservoir and dolomite reservoir,and the results indicated the limestone reservoir mainly developed in main producing area in platform shoal facies,while the dolomite reservoir was developed in a restricted area in the south-east part of the area,with strong heterogeneity.Both the limestone and dolomite reservoir prediction results were consistent with the depositional facies study and diagenesis evolution study.