[en] Uranium hydrometallurgy fixed bed is used to separate and extracting uranium compounds from the leaching of uranium ore. It is a very important equipment in the process of uranium purification. The distribution of the internal flow field of uranium hydrometallurgy fixed bed has great effect on the running efficiency of fixed bed. In this paper, on the basis of fluid mechanics, computational fluid dynamics software Fluent is used to numerical simulation for resin adsorption process in axial flow uranium hydrometallurgy, fixed bed that the diameter is 1600 mm and the height is 6800 mm and to research internal flow field distribution of the fixed bed. The results shows that the fluid distribution in the fixed bed is uneven in the process of adsorbent resin adsorption. The groove shunt filter plate at the exit is a powerful measure to realize the uniform distribution of fluid in the resin layer of fixed bed. (paper)