当今，社会分工越来越精细化，产业之间的协同合作对经济发展的贡献越来越明

Nowadays, the division of labor in society is becoming more and more refined, and the contribution of cooperation between industries to economic development is becoming more and more obvious. Online retail and express logistics are at the upper and lower ends of the industrial chain respectively, and there is a relationship of mutual benefit, win-win and common progress between them. In addition, online retail and express logistics are a composite system, and their subsystems interact and influence each other. Therefore, whether it is analyzed from the perspective of the industrial chain or the system, the synergistic relationship and collaborative development between the two industries are worthy of in-depth study. At present, most of the researches explore the relationship between the two industries from the perspective of the industrial chain. However, the coordinated development of online retail and express logistics is an extremely complicated process. What kind of internal synergy mechanism exists between the two industries, how they interact, how should we evaluate the state of synergy between them, and how to promote their coordinated development, these are issues worthy of in-depth study.

Nowadays, the social division of labor is becoming more and more refined, and the contribution of cooperation between industries to economic development is becoming more and more obvious. Network retail and express logistics are at the upper and lower ends of the industrial chain, and there is a mutually beneficial and win-win relationship between them. In addition, network retail and express logistics is a composite system, their subsysysses interact and interact with each other. Therefore, whether from the perspective of industrial chain or systematic analysis, the synergy between the two industries and the development of synergy are worthy of in-depth study. At present, most of the research is from the perspective of the industrial chain, to explore the relationship between the two industries. However, the coordinated development of network retail and express logistics is a complex process. What kind of internal synergy between the two industries exists, how they interact with each other, how we evaluate the state of synergy between them, and how to promote their synergy are all questions that deserve in-depth study.

Nowadays, the social division of labor is becoming more and more refined, and the contribution of cooperation between industries to economic development is becoming more and more obvious. Online retail and express logistics are at the upper and lower end of the industrial chain, and there is a win-win and common progress relationship between them. In addition, online retail and express logistics are a composite system, and their subsystems interact and influence each other. Therefore, whether from the perspective of industrial chain or system, the collaborative relationship and collaborative development between the two industries are worthy of in-depth study. At present, most of the research is from the perspective of industrial chain to explore the relationship between the two industries. However, the collaborative development of online retail and express logistics is a very complex process. What kind of internal coordination mechanism exists between the two industries, how they interact with each other, how to evaluate the coordination state between them, and how to promote their coordinated development are all issues worthy of further study.