The invention provides a landscape-diversified countryside sewage treatment system. The landscape-diversified countryside sewage treatment system comprises a water inlet well, an anaerobic tank, an anoxic tank, a contact oxidation tank and an artificial wetland. The landscape-diversified countryside sewage treatment system provided by the invention is used as an effective manner of solving the current countryside sewage treatment difficulty in terms of economy and reliability; vegetations in a filtering tank of the wetland have ornamental values and are especially applied to villages with shortage of land resources, higher agglomeration degree and rural tourism industry basis. Compared with a trickling filtration technology, the landscape-diversified countryside sewage treatment system provided by the invention is free of electricity fee and professional operation and maintenance personnel; compared with an ecological combined pond treatment system, the defects of large occupied area, strong seasonality and high vegetation maintenance input are solved; compared with a contact oxidation treatment system, the defects of poor quality of effluent water, low removal of nitrogen and phosphorus and odor of the effluent water are solved.