Abstract: We use coal ash content with logging gamma curve to locate the core of Hancheng demonstration area, and apply trend surface analysis to carry on the normalization for logging data, use density and sound wave in the logging data to set up the wave impedance curve. Then we study the relationship between coal body structure of the core samples at 11^＃ coal seam and corresponding wave impedance, neutron, density, natural gamma logging and other relevant parameters. The results show that using the crossplot technique of wave impedance, compensated neutron response and the coal body structure can classify accurately.