An aerobic bioreactor processing system for a simple landfill is composed of an aerobic bioreactor, a circulating fan, a deduster, an exhaust fan, a deodorizing device, an exhaust barrel, a torch and a heater. The aerobic bioreactor is composed of anchoring ditches, a cover film, gas injection wells, gas extraction wells, rainfall water collecting wells, a recharge device, a simple landfill engineering boundary, a simple landfill flat surface and an online detector 17. After flattening and slope finishing of the simple landfill, the wells are dug in the simple landfill flat surface, the film covers the simple landfill flat surface, and the rainfall water collecting wells are dug around the landfill boundary; and after landfill gas in the landfill is extracted, forced circulating ventilation is conducted on refuse dump bodies, and the stability of the landfill is improved. Through optimization of system configuration, the unit structure and an operation method, the aerobic bioreactor processing system is suitable for treating and repairing the simple landfill, and the operation cost is lowered.