At present, the wet oxidation technology has been widely used in the treatment of high concentration organic wastewater. The development history of the wet oxidation technology in the treatment of phenolic organic wastewater and industrial wastewater was briefly described. The optimum conditions of the catalytic wet oxidation technology including treating different industrial wastewater and pharmaceutical for waste water, printing and dyeing wastewater, coking wastewater, herbicide pesticide wastewater, garbage filtrate, fiber and rubber wastewater were summarized time, temperature, partial pressure of oxygen, catalyst and its carrier, pH value, and removal rate of COD, etc.. The selection of suitable catalysts for the treatment of high-concentration organic wastewater by wet oxidation technology should be further studied, and the two problems should be solved, the corrosion of wet oxidation equipment and a large amount of heat is generated during the reaction of high concentration organic wastewater in the catalytic wet oxidation system.