Abstract: The catalyst of spherical activated alumina which applied in hydrogen peroxide production with anthraquinone method will lose its catalytic activity after used for a period of time，so it has to be regularly replaced.The regenerated bar-like alumina catalyst was prepared with inactivated alumina.Results showed that the regenerated bar-like alumina had more superior performance compared to the spherical activated alumina，the specific surface area，pore volume，average pore size，and compressive strength increased by 23.1%，24.3%，22.3%，and 3.3%，respectively.After soaking in working liquid for 60 d， these four physical-chemical properties only decreased by 29.3%，13.4%，16.3%，and 7.2% for regenerated bar-like alumina， while the spherical activated alumina fell 47.7%，40.5%，16.7%，and 59.8%，respectively.As a result，the service life of regenerated bar-like alumina increased by 1 time than that of original activated alumina.

Key words: anthraquinone method, hydrogen peroxide, activated alumina, catalyst, regeneration