By analyzing the relationship between economic growth and so_2 emission of arid area with Environmental Kuznets Curve theory, it showed that their relationship is obeys the characteristics of Environmental Kuznets Curve. We give suggestuns as follows: speeding up the industrial structure, promoting circular economy vigorously, strengthening the supervision and management of the environment and environmental protection legal system construction, promoting rural three concentrations development,and increasing investment in environmental protection as well.