Abstract: The new design of the Fenton-Fluidized bed was used to treat the landfill leachate. The study was to examine the effect of some factors on the operation of the new type Fenton-Fluidized bed,such as pH,dosage of Fenton's reagent（H₂O₂/FeSO₄） and reaction time. The results showed that the optimal operating conditions for the Fenton-Fluidized bed were obtained with pH of 2. 59 ～ 3. 95,a H₂O₂/COD ratio of 0. 69 ～ 0. 92,a FeSO₄/H₂O₂ ratio of 1. 08 ～ 1. 89 and reaction time of 50 min. Under these conditions,the removal efficiency of COD was 60%～ 70%,and the sludge production was also reduced greatly. Therefore,the fluidized bed Fenton process is more effective and competitive than the traditional Fenton process for wastewater treatment.