Abstract: Coking wastewater is the typical industrial wastewater with high-concentration and refractory organic compounds. The sources of coking wastewater and the characteristic organic pollutants in it were introduced. It was emphasized that the analysis of water quality is the precondition of wastewater treatment process selection. The control of coking wastewater pollution should be based on the whole process from source control to end-of-pipe treatment. The source control and pretreatment play an important role in reducing the biochemical system load. The trends of biological treatment technologies, such as biological denitrification, biological fluidized bed, immobilized biotechnology and microorganism technology, etc., were introduced. It was pointed that the selection of deep treatment processes should consider the characteristics of effluent and the reuse requirements.