Abstract: In order to utilize high-quality coking coals rationally and effectively in Kailuan coalfield,analyzed characteristic and distribution of coal seams and investigated the blending principles between coal seams in every mine in Kailuan coalfield.On that basis,vitrinite reflectance curve of blending coals were predicted successfully.Additionally,software "System of Coal Quality and Coal Petrology Characteristic in Kailuan coalfield"was developed with Microsoft SQL Server 2005,which has realized auto management of coal resource and has been convenient to optimize coal blending.