The wastewater generated in the production process of dinitrotoluene（DNT） is characterized by complex composition and difficult biodegradation. In this study， the idea of O₃/Fe（Ⅱ） oxidation enhanced by high gravity to degrade actual DNT wastewater was proposed. The effect of operating parameters on DNT wastewater removal was studied， and the catalytic mechanism of O₃/Fe（Ⅱ） oxidation degradation of DNT enhanced by high gravity was revealed. The intermediate products in DNT degradation process were analyzed， and the degradation pathway was speculated.The results showed that the increase of the high gravity factor facilitated the deep degradation of nitro compounds， and the pH of the system affected the direct and indirect oxidation reactions of ozone and the concentration of catalyst Fe（Ⅱ）. Under the conditions of high gravity factor （β）of 40， the Fe（Ⅱ） concentration of 0.8 mmol·L^-1 ， the O₃ concentration of 60 mg·L^-1 ， liquid flow（Q_L）of 80 L·h^-1 and pH of 1.1， 60% of nitro compounds were removed after the reaction for 60 min. Under similar operating conditions， the removal rate of nitro compounds was 18.30% higher than that of the bubbled reactor （BR） O₃/Fe（Ⅱ） system. The electron paramagnetic resonance spectrum showed the relative peak intensity of 1∶2∶2∶1， indicating the existence of hydroxyl radical （·OH） ， confirming that the degradation process followed the catalytic mechanism of ·OH. The intermediates of DNT degradation in rotating packed bed（RPB）O₃/Fe（Ⅱ） system mainly include dinitrobenzaldehyde， dinitrobenzoic acid， dinitrobenzene， resorcinol， malonic acid. The degradation pathway of Fe（Ⅱ）-catalyzed ozonation of dinitrotoluene was speculated.