This study examines the effectiveness of Chinese environmental information disclosure (EID) regulations. We find that EID regulations improve firms' EID quality (i.e., exist information effect) and foster firms' green behavior (i.e., exist green effect). Mechanism analysis shows that due to lower audit risks, heavy-polluting firms are charged lower audit fees after the implementation of EID regulations; and due to less managerial myopia, heavy-polluting firms significantly increase green investment and green innovation following EID regulations. Additional heterogeneity analysis shows that these information and green effects can be strengthened by institutional environment factors, such as media coverage, audit quality and political cost.