The influence of pore size distribution of super-high specific surface area activated carbon on hydrogen gas adsorption storage capacity was studied when the specific surface area is equal. The studies results indicated that the percent of mesoporous (2nm0).?At?273?K?and?9.0?MPa,?hydrogen?desorption?amount?reached?26.67?mmol·g-1 for the super-high specific surface area activated carbon with the percent of mesoporous reached 79.06 %. And the hydrogen desorption amount decrease with the increment of adsorption temperature.