Abstract: The hydrogen storage alloys are selected as tritium s torage and boost materials. The alloy's lattice swells and compresses in the hyd rogen ab /desorption cycle, and the wall stress is induced as a result of ununi form deformation. The pulverization of the bulk material leads to self compacti on and concentration of stress. The relationships of wall stress of hydrogen sto rage bed with cycle number of hydrogen ab /desorption, capacity of hydrogen sto rage, packing fraction and thickness of the wall are studied using strain gauges. In the paper, the relationship of wall stress and capacity of hydrogen storage is mainly discussed.