The treatment of hydrazine fuels (unsymmetrical dimethylhydrazine(UDMH), anhydrous hydrazine(HA)?, methylhydrazine(MMH) and DT-3) waste water through H₂O₂ (hydrogen peroxide)/UV (ultraviolet)/O₃ (ozone) oxidation technology with a scale-up amplification test (1 m³/h) is carried out when temperature is 30.0±0.6 ℃ and pH is 9.0±0.2. The hydrogen peroxide-enhanced photolytic ozonation degradation of hydrazine fuels is studied. The synergistic effects of different oxidation technologies and the effects on wastewater degradation are compared. The effects of process parameters such as hydrogen peroxide, ultraviolet light, ozone and initial mass concentration on the degradation are investigated, and the application of oxidation technology is optimized. The results show that the hydrogen peroxide-enhanced photolytic ozonation can increase the removal rate of COD by 27.66%, the degradation rate of hydrazine fuels and COD increases as hydrogen peroxide dosage, UV radiation intensity and O₃ dosing rate increase. And the rate decreases as the initial concentration increases. The rate of ozone dosing and the intensity of ultraviolet radiation are the two factors that have the greatest impact on the reaction rate. The removal efficiencies of hydrazine fuels and COD are 100% and 98.62% at the concentration of 5 000 mg/L for 60 min under the optimum conditions of the system as follows: hydrogen peroxide dosage D_hyp=47.2 g/L, UV radiation intensity R=750 μW/cm², ratio of 185 nm ultraviolet light sources to 254 nm ones 3∶2, ozone dosing rate D_ozone=60 mg/(L·min). To conclude, hydrogen peroxide enhanced photolytic ozonation process is suitable for the treatment of all kinds of hydrazine fuels waste water, and the degradation of each hydrazine fuels waste water is in line with the first-order reaction kinetics process. Under the optimal reaction conditions, the COD removal effeciencies are 98.62% (UDMH), 99.17% (MMH), 99.94% (HA) and 93.25% (DT-3), respectively.