The treatment of the H-acid containing in wastewater by wet peroxide oxidation (WPO) and catalytic wet peroxide oxidation (CWPO) was studied in a 0.5 L autoclave. It were investigated that the effects of temperature, pH, dosage of hydrogen peroxide and the types of catalyst on the oxidation process and the degradation efficiency. The results showed that H-acid which have stable structure at lower pressure and temperature can be degraded by WPO, and 62.0% of COD and 98.7% color removal were attained at the conditions of 110°C, 0.5 MPa, initial pH = 5.0 and theoretical dosage of peroxide when the initial concentration of H-acid containing water was 10 g/L. With catalyst Cu/Ni, 92.0% of COD and 99.9% color removal were obtained in the CWPO process under the same reaction conditions.