Abstract: Coking wastewater is produced in coking process of coal pyrolysis carbonization,raw coke oven gas and petrochemical recovery and purification,which contains lots of pollutant and contaminates environment severely.The maturer coking waste processing techniques are physical-chemical,biological and chemical method,which respectively contains flocculence,adsorption,flue gas treatment and extraction method;aeration treatment,denitrificationnitration and biological fluid bed method;burning,ozonation process,oxygen catalytic oxidation method,electrochemical process and Fenton reagent method.The core is biological treatment,and its technological process is comprised of pretreatment,biochemical treatment,advanced treatment and wastewater reuse.The physical-chemical method is usually used in pretreatment,and physical-chemical process and physical-chemical-biological group technology are used in advanced treatment.The technological process,which is clean,efficient and low-cost,can realize zero release of coking wastewater and recycle of water resources to meet the demands of sustainable development of economy and society.