The development of high-tech and its industry has become the focus of economic development in all countries in the world, and it is also the key to determine the economic development speed and international competitiveness of all countries. Therefore, a timely and comprehensive understanding of the characteristics of high-tech development in the world and a thorough and systematic grasp of the important role of high-tech development in world economic reconstruction are of great practical significance for deepening China's division of labor in the field of world science and technology research, promoting China's reform and opening up in the field of science and technology, promoting high-tech industrialization, improving the international competitiveness of science and technology industries, taking the road of independent innovation with China characteristics and establishing an innovative country as soon as possible. At present, high-tech development, as the leading force of world economic reconstruction, is mainly manifested in the following aspects: First, high-tech development has promoted the rapid economic growth of all countries in the world. Internationality and globality are important characteristics of the development of post-war scientific and technological revolution. In particular, a series of emerging technologies, led by microelectronics and information technology, rose in major developed countries in the west, including dozens of countries such as Russia, and soon swept the developing countries, becoming a worldwide scientific and technological revolution. The industrialization and commercialization of high technology have greatly improved human production tools, expanded the conditions for reproduction, and realized the optimal combination of productivity, especially the intelligentization of workers, the automation of labor tools, the artificialization of labor objects, the networking of workplaces and the informationization of labor knowledge, which greatly improved social labor productivity. Take the information technology industry in the United States in the 1990s as an example. American large enterprises are increasingly becoming the main body of information technology research and development. The investment of large enterprises in commercial fixed capital such as computers, application software and communication equipment has increased year by year, reaching $355 billion in 1990 and $9 189 billion in 2000, with an increase of more than 10.5 times in10. The increase of commercial capital's investment in information technology has promoted the development of information technology represented by computers, mobile phones, optical fibers and networks, and made breakthroughs in information processing, data storage, information exchange and application software, thus greatly improving the labor productivity of the United States. Taking the non-agricultural commercial sector as an example, the average annual growth rate of hourly labor output in 1993-2000 was 2.3%, while that in 1973- 1993 was 1.4%. The actual output also continued to increase. From 1993 to 2000, the real GDP of the United States grew at an average annual rate of 4.0%, 46% higher than that of the previous 20 years. In addition, the development of information industry in western Europe, Japan and other countries has promoted the integration of emerging industries and traditional industries and the transformation of traditional industries to varying degrees, promoted the economic growth of countries to a certain extent, optimized the socio-economic structure, and improved the strength of countries in international competition. Therefore, all countries in the world regard the development of high-tech industries as the focus of social and economic restructuring and reform, and expect to promote the all-round development of social economy through the rapid development of high-tech industries. Second, the development of high technology has expanded the level and scope of the world market. The impact of high-tech development on the world market is multifaceted. First of all, it expands the level of the world market. High-tech is generally an interdisciplinary and interdisciplinary emerging frontier discipline, which will inevitably lead to the emergence of new product markets and new factor markets. Its development and prosperity will undoubtedly expand the level of the world market and enrich the content of market exchange. The appearance and use of high-tech also promoted the transformation of traditional industries, especially when high-tech is used to improve the production tools, materials and processes of traditional industries, the internal composition and performance of traditional industrial products will change, and their scientific and technological content will be greatly improved. The result of the transformation will inevitably promote the deepening of the specialization of traditional industries and the differentiation of traditional products, and then enrich the exchange level and structure of the traditional product market. The second is to expand the scope of the world market. The development of high-tech represented by information technology and space technology has not only changed the transaction mode of the world market, shortened the transaction time and improved the transaction efficiency, but also transformed the world market from the traditional tangible market to the intangible market, especially the rapid development of information technology and network technology, which greatly changed the transaction field of the world market and promoted the rapid development of global e-commerce. According to Forrester's statistics, in 2002-2004, the global e-commerce scale was $2,293.5 billion, $3,878.8 billion and $620 1 1 billion respectively. The initial estimate in 2005 was $9,240.6 billion, and it is expected to reach1283.73 billion in 2006, with an amazing development speed. With the development of global e-commerce, great changes have taken place in the traditional world commodity exchange places, and international exchange has changed from tangible market to virtual intangible market, which has led to the networking, virtualization and electronicization of the world market and the continuous expansion of the market scope. Third, it has promoted the expansion of the world consumer market. With the development of high-tech industry and its contribution to social economy, the labor productivity and wage level of various countries are increasing day by day, which has led to the increase of world consumer market demand and the expansion of consumer market itself. Third, high-tech development has optimized the world economic structure. Mainly reflected in: First, it has softened the industrial structure of all countries in the world. High-tech industries are both technology-intensive and knowledge-intensive industries. Technology and knowledge play an increasingly important role in the process of industrial development, and sometimes even become a decisive force in determining the direction of industrial structure change. The softening of industrial structure, in a narrow sense, mainly means that in the development of various industries, the role of tangible hard production factors in the evolution of industrial structure is declining, while the role of intangible soft production factors such as knowledge, technology, service and information is rising, which is embodied in the knowledge, high-tech, service and informatization of industrial structure. In other words, the leading role of labor and natural resources in industrial structure adjustment is increasingly replaced by knowledge and technology, thus relying more on soft production factors such as knowledge, technology, services and information. Broadly speaking, it mainly means that the tertiary industry, represented by knowledge and information industry, plays an increasingly important role in the economic structure of various countries. At present, the tertiary industry has become the leading industry in developed countries and has an absolute advantage in the national economic structure. The second is to optimize the employment structure of countries around the world. The vigorous rise and rapid development of high-tech industries not only promoted the integration of the three major industries, especially accelerated the integration of the secondary and tertiary industries, and accelerated the "three industrialization" of some industries, but also greatly adjusted the internal structure of the tertiary industry. With the growth of knowledge and information input in the tertiary industry, many emerging service departments emerge in it. The "fourth industry" that manufactures information equipment and uses these equipment to collect, store, transmit, process and serve information is increasingly accepted by countries all over the world. As a result, it will inevitably bring about the change of labor employment tendency and the adjustment of employment structure, making the tertiary industry increasingly become the main channel and place for countries to absorb employment, and the employment structure has been continuously optimized and improved. Thirdly, it has changed the income and benefit redistribution structure within a country, thus promoting the adjustment and change of social interest groups or stratum organizations, and playing a certain role in the balance and coordination of relations among social interest groups. Fourth, the development of high technology has triggered the innovation of the world economic system. The development of high technology has also promoted the variation and innovation of the world economic system, especially the innovation of the micro-operation system. First of all, it has changed the organizational form of enterprises. The investment and risk of high-tech industrialization are enormous. In order to share costs and risks, most enterprises in various countries adopt transnational strategic alliances and cooperation. Since 1990s, the strategic alliance of multinational corporations represented by high-tech industries has made great progress, from the previous product strategic alliance to the knowledge alliance with technical cooperation as the main content, from the hostile strategic alliance to the friendly cooperative strategic alliance, and from the simple and extensive strategic alliance to the intensive strategic alliance. The second is to change the micro-management mode of enterprises. The development of high-tech promotes the transformation of enterprise investment and management strategy, and venture capital has become the main way of high-tech industry operation; The application of information and network not only changes the enterprise marketing mode, making global marketing, brand marketing, network marketing and * * * marketing the focus of enterprise marketing all over the world, but also changes the enterprise inventory management, reduces the cost of information dissemination, makes it easier for enterprises to adjust the ratio of storage to sales according to market signals, and then realizes zero inventory management; Improve enterprise supply chain management, simplify enterprise procurement procedures, and make enterprises realize real-time procurement. The third is to change the management mode of maintaining customer relationship in enterprises. Enterprises use information and network to track and analyze customer information, develop the most potential customers with goals, maintain the relationship between enterprises and customers, and expand the service scope of enterprises to customers. Fifth, the development of high technology has changed the world economic relations. The influence of high-tech development on the reconstruction of economic relations among countries in the world is various. First, it has deepened the international professional division of labor among countries. High-tech is the result of the accumulation of scientific and technological development in various countries. It is impossible for a country to be in a leading position in all scientific and technological fields, and countries will choose their own high-tech fields with comparative advantages to make key breakthroughs. The rapid development of high-tech industrialization in various countries not only intensifies the competition in the international market, but also further leads to the specialization and refinement of the division of international production relations. The second is to promote changes in the world economic structure. High-tech gives birth to emerging industries, which gradually develop into a leading industry of a country because of their strong competitiveness, and drive the development of other industries, thus forming a high-tech industrial cluster with international competitiveness. The history of human scientific and technological revolution tells us that if a country takes the lead in mastering high technology and promoting its industrialization in scientific and technological changes, it will be in a leading position in the world economic competition pattern. In the 1990s, the United States took the lead in seizing the historical opportunity of the development of information technology and promoted the development of the "new economy", thus maintaining its leading position in the world economic structure. Third, it has deepened the economic dependence between countries. Although the development of high technology in post-war countries is unbalanced, it is an indisputable fact that high technology promotes the deepening of economic globalization. Modern space transportation technology and network information technology shorten the time and space distance between countries in the world, reduce the economic transaction costs of countries, expand the global exchange scale of goods, capital, technology and labor, and enable multinational companies to organize production and operation on a global scale. Undoubtedly, economic globalization has deepened the economic dependence among countries in the world.