| Postal industry is the basic industry of China’s economic development. As an important component of the modern service industry, postal industry has a very important position. With expand of China’s economy scale, rapid development of electronic commerce and the continuous improvement of people’s living standards, business and personal needs for postal services are also increasing, and postal industry has the huge potential. Meanwhile, the network scale, technology level and service quality of the postal sector has been greatly improved, which effectively promoted the development of the national economy. However, China’s postal industry is facing unprecedented opportunities for development, but also faces more severe challenges. At this stage of the economic developing rapidly, people’s living standards improving, the postal industry how to change their ways of development to adapt to social and economic development has become a major issue need to be addressed for the development of modern postal services. By researching how it affects and works between the postal sector and economic system, we can provide a reference to solve the problem.In this paper, from the start of the background and significance of the research, we first introduced the knowledge of the modern postal industry and economic system, pointing out that our postal service is still in its early stages of modern postal industry development. Based on the simple analysis of the economic system’s four sub-system of production, distribution, exchange and consumption, I analyze the influence of economic factors on postal development, and then build and analyze SD model of the modern postal industry and economic elements to predict the development trend of the amount of the postal industry and GDP. According to the analysis conclusions, I put forward some relevant policy suggestions on the development of modern postal industry:strengthen the postal investment management; increased infrastructure construction; promote the application of science and technology; promote the development of qualified personnel.This paper builds a system dynamics model of the modern postal industry and economic factors that can calculate clearly the degree of interaction and affect between modern postal industry and the various elements of the economic system, in order to clear the development element of modern postal industry, and provide direction and focus for the future development of the postal sector, making full use of the positive role of the various elements. |