The gas dispersion behavior in the cylindrical and conical moving bed was investigated/compared by using the helium gas tracing technique. The experimental results show that radial flow of cylindrical bed assumes a plug pattern while the axial gas distribution of conical bed was non-uniform in the main flowing zone (0.110.89), the gas bypassing appears in the cylindrical moving bed and radial flow of conical bed tends to a plug pattern. Because the gas bypassing would be reduced by about 40%~50% in conical bed. According to the radial flow characteristics in the cylindrical and conical moving bed, furthermore, an empirical model for estimating the axial distribution of gas concentration was established based on the experimental data and the theoretical analysis, which agreed with the experimental data.