Abstract: Adopting catalytic wet-type Oxidation to dispose the high concentrated organic waste water produced during the production process of benzotriazole. The experiment demonstrates that the preparation of composite supported catalysts CuO-Co₃O₄-MnO₂/ZrO₂-CeO₂ have better catalytic activity when disposing the waste water. Through the study of increasing the catalyst investment, reaction temperature, oxygen tension and the PH value of wastewater and other technological conditions, we obtain the optimum technological condition: When catalyst dosing quantity is 10 g/L, reaction temperature is 220℃, oxygen tension is 2.5MPa, the initial PH value of wastewater is 10.5, to react for 120 min under these conditions, CODcr removal rate can reach to 98.2%.