Facing complicated international situation and increasingly drastic competition at home and abroad，Shanghai，as a national central city and an opening city around the world，should focus on consolidating national economic foundation，and form an advanced industrial cluster that manifests national security and an extensive urban cluster in China. Besides，from the perspective of international competition，Shanghai should make use of its stock advantages to enhance the construction as a global manufacturing center，shipping center，trade center，financial center，sci-tech center，and a global high-level opening center，which will boost the general function of Shanghai as a megalopolis and its specific function as a national central city.