Abstract: In order to study the variation of pollutants in coke quenching water before and after coke quenching，the treatment effect and the impact on coke quality when using Fenton Oxidation Method to treat quenching water,this paper analyzed the water quality characteristics of coke quenching water,investigated the changes of CODCr and SS concentration in water before and after quenching,and discussed the effects of Fenton oxidation treatment and the changes of width=61,height=17,dpi=110 and Fe2+ concentrations in water.The results show that the concentrations of CODCr and SS increase after quenching,the average increasement of CODCr and SS are 47.6 mg/L and 32.6 mg/L respectively.Under the optimal reaction conditions when the dosage of 1% oxidant and hydraulic retention time with 1 h,CODCr removal rate reaches 55.55%～70.02%.It is found that the treatment of coke quenching water by Fenton oxidation will lead to the increasement of Na+and width=29,height=17,dpi=110 concentration and the decrease of Fe2+ concentration in effluent.When Fenton Oxidation Method is used to treat coke quenching water,Na+ concentration had a certain cumulative effect.Therefore,Na+ accumulation amount should pay attention to control.