The treatment of rural domestic sewage and black-and-odorous water bodies plays a crucial role in supporting the construction of happy rivers and lakes. Focusing on remedying the shortcomings in the treatment of rural domestic sewage and black-and-odorous water bodies and better promoting the construction of happy rivers and lakes, it has carried out systematic improvement of such water bodies across its entire rural areas and achieved certain results in Jining Municipality. This paper analyzes the experience and existing problems in the treatment systematically in Jining, puts forward suggestions for better carrying out such treatment, and provides a reference for relevant ecological improvement of rivers and lakes in other regions.