The quantitative evaluation of the settlement characteristics of landfills by aerobic degradation is an important basis for predicting and evaluating the stabilization of aerobic degradation. The settlement characteristics of man-made waste soil with typical household waste composition ratio in Wuhan were tested under different ventilation conditions

and the influence of aerobic ventilation frequency on settlement deformation was analyzed. The results showed that aerobic ventilation significantly increased the settlement rate of municipal solid waste under anaerobic condition when the settlement rate was stable. The settlement efficiency of the upper

middle and lower layers of waste soil at high ventilation frequency was increased by 145%

150% and 100% respectively

compared with the settlement efficiency at low ventilation frequency. Also

an anaerobic-aerobic combined settlement model (ANACS model) was established

and the reliability of the model was verified by comparing against the settlement values obtained from experimental monitoring. Outcomes from this study provide a theoretical basis for the evaluation of the settlement stability of waste soil in aerobic ventilation process.