Different symbiotic scenarios were designed and combined with oyster shell pollution management cases in two different counties (labeled A and H in this study) using symbiosis theory and a game simulation model to investigate the conditions for realizing multiparty symbiosis in oyster shell pollution management. The results show that the primary condition for achieving a virtuous cycle of tripartite governance is active governance by the government. To realize such tripartite governance, it is necessary to reduce the cost of government regulation and change the government's concept and value orientation; to reduce the cost of social capital contracted for participation in governance to improve the sustainability of social capital in the case of governance participation; and the villagers' public, as the destroyer of the environment and the beneficiary of governance, should change their traditional concept of governance. Changing the traditional concept of the villagers would improve the benefits that the villagers can obtain by participating in governance, and this should be supplemented with corresponding reward and punishment mechanisms to increase the cost of the villagers' choice not to participate. If the conditions listed above are met, the system will enter a virtuous cycle of tripartite governance. Based on this, we hope to seek a sustainable and replicable oyster shell pollution management path through the experiences of oyster shell pollution management in both A County and H County, so that we can better promote the rural revitalization strategy and realize the construction of a beautiful China.