The catalytic performance of ZSM⁃5,beta and USY zeolites for the preparation of low⁃carbon olefins from F⁃T synthetic distillate oil was investigated in ACE experimental facility.The effects of temperature,mass oil⁃to⁃solvent ratio and mass space velocity on the catalytic performance of beta zeolites were also investigated.The results showed that the ethylene yield was 4.22%,the propylene yield was 31.08%,the butylene yield was 19.96%,and total light olefin yield (ethylene + propylene + butylene) was 55.24% when the reaction temperature was 620 ℃,the mass of catalyst to oil ratio was 8 and the mass of space velocity was 8 h⁃1.