In order to protect the ecological environment and environmental right of the public，Haixi Mongol and Tibetan Autonomous Prefecture，Qinghai Province made relevant political documents，took a series of actions and acquired effect to a certain degree. Through questionnaire survey and interview，it was found that nationalities at Haixi Prefecture had knowledge about environmental right and policies and regulations relevant to environmental issues to some extent. They had relatively strong environmental awareness and mainly participated in the post stage of environmental protection. Furthermore，they gave positive evaluation to the status of environmental protection and guarantee of environmental right. In order to further protect the environmental right of the public，it is necessary to perfect the mechanisms of informed，expression，supervision and solving conflicts.