| The more than 40 years since the policies of reformation and opening,the development of export trade as an important part of economic development in our country,in the foreign trade of the early,the country with low labor cost advantage so as to obtain the rapid development of export trade,and with the improvement of economic development level,the export trade mode cannot have satisfied the current export status,In addition,in the current global economic situation is not optimistic and the multilateral trade negotiation process is slow,how to optimize the structure of export trade and improve the development pattern of export trade to achieve high-quality development of export trade has become particularly critical.In the current society,from AI intelligence,big data to sharing economy,intelligent manufacturing,cross-border electronic commerce,etc.,digital economy is gradually entering social life.The strong driving force generated by the development of digital economy is providing continuous power for all walks of life and promoting the all-round "digital butterfly change" of social economy.Digital economy is likely to be one of the important driving forces and sources of Chinese economic development in the future.How to apply the dividends of digital economy to export trade and achieve high-quality development of export trade has gradually become a research hotspot.Based on the panel data of 281 cities at prefecture level and above in China from 2011 to 2019,this thesis attempts to explore the impact of urban digital economy development on export trade,and constructs a moderating effect model based on the level of innovation and entrepreneurship,so as to further explore the specific mechanism path of the impact of urban digital economy development on export trade.The general framework of this thesis is as follows: Firstly,through relevant literature,the current researches on this topic are sorted out,the relevant researches are briefly classified and summarized,and the perspectives and directions that can be cut into are found;Then the relevant theories supporting this article are explained.On the theoretical basis,the theoretical mechanism of the influence of the development level of digital economy on export trade is described and the relevant hypotheses are proposed.Secondly,combined with existing literature and other relevant materials,the definition of digital economy in this thesis is elaborated,and the measurement index of digital economy is constructed by using entropy method to analyze the current situation,and the development level of urban digital economy and the current situation and characteristics of export trade of goods are analyzed and described from the overall level.Finally,this thesis builds empirical models of fixed effect and moderating effect to verify the relevant assumptions mentioned above one by one and draw relevant conclusions and policy recommendations.Based on theoretical and empirical analysis,this thesis draws the following conclusions:Firstly,the development of digital economy in each city has a positive effect on promoting the development of export trade.In order to verify the credibility of this conclusion,this thesis conducted robustness tests including replacement of core explanatory variables,elimination of some samples and consideration of endogeneity problems.The final regression results were still significant and the conclusions remained consistent.Therefore,it can be considered that the robustness test has been passed.It also strengthens the credibility of the conclusion that the development of digital economy plays a significant role in promoting urban export trade.Secondly,there is heterogeneity in the promotion effect of digital economy development on export trade in China,and the promotion effect is different in different regions.In order to verify this conclusion,this thesis carries out regression from the three dimensions of eastern and central and western cities,central and peripheral cities,as well as large and above cities and small and medium-sized cities respectively.The results show that there is heterogeneity in the promotion effect of digital economy on export trade.This conclusion is basically valid under different sample classification standards.This article also noticed that in the return of the peripheral cities and small and medium-sized cities,the Numbers for export,there is no significant role in promoting economic development,to this,this article will likely reason comes down to small and medium-sized city infrastructure construction is relatively weak,digital kinetic energy is converted into kinetic energy exports are insufficient,digital dividend in the current sample interval is not obvious,And the existence of "siphon effect" in the development of digital economy in central cities and large cities.Thirdly,the improvement of the level of innovation and entrepreneurship will help strengthen the role of digital economy in promoting export trade.By introducing innovative entrepreneurial level proxy variables and construct the digital economy and the level of innovative undertaking paid by item,this thesis verified the level under the development of innovative undertaking and digital economy’s export promoting effect to strengthen,which may explain is under the development of the innovative undertaking,more digital technology and digital products are created,These promote the further development of digital economy and ultimately enhance the role of digital economy in promoting exports.According to the conclusion of this thesis,this thesis puts forward corresponding policy suggestions from macro and micro levels.Macro level,this thesis argues that should continue to strengthen the consciousness of cultivating digital,increasing investment in digital infrastructure,but also should pay attention to strengthen collaboration between cities,narrow the digital divide,finally notice innovation entrepreneurship in the digital economy play a role in promoting the export trade,insist on innovation drive development strategy,to create a good environment,innovative undertaking Finally realize its role of digital economy to promote the development of export trade.The micro level,this thesis argues that the economic development of export enterprises should seize the current digital opportunities and export with the digital technology depth fusion,at the same time pay attention to the cultivation of high-quality innovative talents and motivate,finally pays attention to the global consciousness in the enterprise of city layout,reasonable industrial layout in different cities,realize own better development. |