Under the background of accelerating the construction of the “Dual Circulation” Development Pattern，the “digital revolution” is rising all over the world and reshaping the global economic pattern. More and more transactions are completed through digital tools，and digital products and services are becoming important trading products，which forms digital trade. At present，the world has not yet formed a globally consistent and accepted digital governance system. Both the United States and the European Union intend to lead the formulation of global digital governance rules. Although China has a huge digital economy market，it still does not have the right of speech in global digital governance. Therefore，in order to achieve the breakthrough and development of digital trade in China，the core is to deal with the five relationships of sovereignty and governance rights，openness and security，innovation and supervision，development and governance，government platform and individuals，and establish regional EWTP（E-international trade platform）and ETP（E-trade platform）to support digital trade，so as to build a number of global，regional and national supply chain hub cities.