Abstract:With the rapid growth of China's economy, environmental pollution is becoming more and more serious, and environmental governance and protection have become an important pillar of national security and economic development. As a third party mode, which is strongly supported by our government, the validity of the model is the premise of policy promotion and application. Different from previous papers focused on qualitative analysis model of third party applications, the article quantitative analyzed of the model whether is effective, by selecting the cities which have been adopted third party governance mode and the cities which have not yet been using third party governance mode as the comparison samples. Firstly, the grey relational degree of the sample city is calculated by the grey relation and entropy method, and the effect of environmental governance in each sample is sorted. Secondly, the factor analysis method is used to calculate the environmental governance coefficient. Finally, according to the kendall-W coefficient, the consistency of the evaluation results is obtained. The study found that the ranking of urban environmental governance in sample cities which had adopted the third party governance model increased, indicating that the third party governance model could effectively reduce the current situation of environmental pollution and improve the local urban environment.