With the advantage of being the world's second most populous country, along with the improvement of science and technology, and driven by the two factors of promoting the development of foreign trade and stimulating domestic demand, China's economic growth speed and scale are constantly expanding. The manufacturing in China has gone all over the world, from all kinds of basic food to clothing and department stores, from overseas aid projects galloping like lightning Chinese high-speed railway has appeared in every corner of the world. China is now the second largest economy after the United States. Along with the Internet era, data exchange becomes more and more frequent, the global economy develops rapidly, trade facilitation, logistics modernization, and technology informatization greatly promote the trend of world economic globalization and regional economic integration. Imports and exports, one of the drivers of China's economic growth, have seen a surge in business. The customs, an important link in the foreign trade chain, shoulders the heavy responsibility of guarding the country. It has become the solemn mission of the Customs to collect, analyze and feedback data by using the function of cloud computing, so as to focus on the stable development of current trade and forecast future economic growth. Through cloud computing function, customs uses paperless cloud computing technology for customs clearance, which on the one hand improves efficiency. It not only saves the customs clearance time for import and export enterprises, but also improves the speed of customs inspection. On the other hand, the cloud-computing paperless customs clearance can also help the customs to strengthen the prevention of smuggling management, strengthen the prevention of smuggling risks, and prevent security accidents caused by concealing. Finally, it can realize the integration of China's customs clearance management and international customs management, laying a foundation for the unification and standardization of the world's customs management rules.