The gas distributor, as an important part of fluidized bed drier, can directly affect the drying property of drier. For comparing the hydromechanics and heat transfer property of inert particles fluidized bed drier between vertical-hole distributor and titled-hole distributor, the drying processe of detergent suspending liquor was experimented in this paper. The characteristic curves of hydromechanics, volumetric heat transfer coefficient and heat efficiency of drier were carefully determined under the same experimental parameters, such as feed volume, gas temperature of entrance, gas rate of entrance, and diameter of inert particles. The experimental results show that the structure of opening hole in gas distributor has a dual effect on fluidized drying. Compared with vertical-hole distributor, titled-hole distributor will increase the flow resistance of gas, but it will promote the heat transfer of drier. Based on the results, some advice was proposed in the conclusion of this paper to improve the performance of inert particles fluidized bed drier.