In recent years, under the background of comprehensive economic and social transformation, the adjustment of social interest pattern has led to frequent environmental group events. In the whole process of fermentation, environmental group events not only consume a lot of social public resources, pay high political costs, but also affect social order and threaten the ecological security of our country. This paper makes an in-depth game on the various stakeholders involved in environmental group events, and analyzes the causes of environmental group events, including local government negligence, corporate breach of trust, damage to citizens " interests and new media promotion.