Porous materials such as activated cokes have been widely utilized in the adsorption removal of atmospheric SO₂ emission. Pore configuration of coke is a key factor affecting its SO₂ rapid adsorption dynamics, which is critically important for fluidization adsorption craft. Herein, activated coke adsorbents with typically microporous structure and hierarchically porous structure were prepared by a catalytic physical activation method from Chinese large-reserve Zhundong coal, which were used as model adsorbents to investigate the effect of pore configuration on SO₂ fluidized adsorption dynamics. SO₂ fluidized-state adsorption experiments indicate that hierarchically porous coke has a more rapid initial adsorption dynamic than microporous type coke, and coke with 44.2% meso-/macropores volume shows the highest initial adsorption rate of 7.37 mg g⁻¹·min⁻¹. Additionally, the fitting of Weber-Morris model provides the dominate factors for SO₂ adsorption kinetics in each sub-process: SO₂ adsorption capacity of microporous-dominated adsorption stages account for 70%–80% of total, and when it comes close to adsorption saturation, the main dominant factor of kinetic becomes the ratio of meso-/macropores volume. This work is of significance for the application of SO₂ adsorption craft in fluidized bed and also provides insight into the role of hierarchically porous configuration in gas molecule rapid adsorption.