AbstractEnvironmental pollution may directly decrease output and decreasing productivity of man-made capital and labor. The distressfulness and the long term damaging effect of this environmental pollution can contribute to destructive consequences on human wellbeing and economy. The purpose of the study is to examine the relationship between CO2 on economic growth in Asean 8. The income levels per capita gross domestic product per capita were measured from the year 1965 to 2010. This study formulates a three equation simultaneous model for empirical research. In the pollution indicator emissions, CO2 in Asean 8, the Environmental Kuznets Curve relationship is found.