Abstract: The adsorbing behaviors of SO2 and NOx over a solid adsorbent, the regeneration performance of spent adsorbent in the presence of hydrogen, and the hydrogen reduction of SO2 and NO in gas phase were studied by a continuous micro fluidized fixed-bed reactor. Results showed that SO2 and NOx interacted with the adsorbent through chemical adsorption under atmospheric pressure and 200℃. Under atmospheric pressure and 600℃, 12 % of SO2 and 14 % of NOx (based on the adsorbed amount) were released from unstable salts. The adsorption capability of the loaded adsorbent could be recovered under the conditions of atmospheric pressure, a reaction temperature of 600℃ and a reaction time of not less than 20 min. Under atmospheric pressure, the temperatures of complete conversion of SO2 and NO in gas phase were less than 500℃ when the excesses of hydrogen were 3 and 8 times over the stoichiometric ratio to SO2 and NO, respectively.