Green mountains and clear waters are like mountains of gold and silver. Green development is determined by water. As a high water consuming industry, the coking industry produces industrial wastewater containing a large amount of recalcitrant organic pollutants, which is extremely difficult to treat. The excessive discharge of wastewater will cause serious pollution to the environment. How to achieve stable and standard treatment of coking wastewater has become the main obstacle affecting the water quality standard discharge and water reuse of production enterprises.