Abstract: Multi-agent collaborative governance in agricultural products is great significance to promoting the green development of agriculture. Based on the green production data of tea industry in geographical indication protection area, this paper starts from the cooperative game of geographical indication protection participation and its synergistic performance for the first time. From the two perspectives of game theory and synergy theory, this paper analyzes the incentives of the participants of GI protection to green tea production. The research shows that the cooperation of the main body of geographical indication protection is not complete at present; the coordination degree is only 0.64, which is at the level of “coordinated and generally effective”. The tea factory and the tea farmers have become the shortcomings to decrease the overall coordination degree. The model verification shows that the quality inspection system and the understanding of public brands are to supervise and encourage tea factories and tea farmers to improve the efficiency of geographical indication protection. In order to improve the coordinated performance of geographical indication protection, the government should build a coordinated management system for geographical indication protection entities supplemented by market and government intervention.