Abstract: To enlarge effective supply when advancing the structural reform of Ma'anshan is to meet the need of not only the new normal economic development and the cultivation of new advantages of regional competition, but also the theme of accelerating the development and the city's transformation and upgrading. Currently, there exist problems such as heavy tasks of resolving the excess capacity of backward production and weak competitiveness of products. Therefore, top level design should be conducted based on the structural reform of the supply side. The quality, image and efficiency of supply should be improved to enlarge effective supply.