The construction of “a waste-free city” is an important initiative to thoroughly implement Xi Jinping’s thought on ecological civilization，building a beautiful China and promoting the realization of high-quality economic and social development. The construction of a “waste-free city” requires the participation of many subjects，such as the government，enterprises and individuals. Many effective initiatives have been explored in the pilot practice，but there are still many practical problems revealed in strategic planning，top-level design and management system operation. The People’s Procuratorate of Jinwan District，Zhuhai City，in its exploring public interest litigation to assist the construction of “a waste-free city”，adheres to the collaborative work，deepens the “criminal+public interest litigation” integration，takes the initiative to ensure that the accountability is implemented effectively，systematically and comprehensively promotes the effectiveness of procuratorial supervision and explores the deepening of public interest protection through reform and innovation.