During the Western Han Dynasty, with the economic and cultural exchanges and communication between the East and the West, it greatly promoted the further social and economic development of the western regions. Crops such as flax, broad beans, pomegranate, garlic, grapes and alfalfa from the western regions were introduced to the mainland one after another, and Dawanma, Wusunma and various furs, known as Tianma, also entered the Central Plains through the Silk Road. At the same time, silk and silk products from the Central Plains were introduced to the Western Regions and then to Europe. In addition, advanced production tools and technologies, such as farming, water conservancy and handicrafts, were also introduced to the Western Regions. Handicrafts in the western region, such as pottery making, wool spinning and jade making, have a fairly high technical level. The popularity of five baht, nux vomica and rest silver coins in Xinjiang in Han dynasty shows the prosperous commercial level in this area.

In order to strengthen the contact with the western regions, * * * and the Huns. When Zhang Qian went to the Western Regions, he obtained first-hand information about the society, economy, transportation and climate of the Western Regions, deepened the understanding of the Central Plains about the Western Regions, strengthened the political and economic ties between the two places, expanded the political influence of the Han Dynasty in the Western Regions, established friendly relations between the Western Han Dynasty and other countries in the Western Regions, and made the "Silk Road" smooth, creating conditions for the Han Dynasty to unify the Western Regions.