This article mainly from the perspective of supporting and maintaining the operation of the ancient Silk Road, combining the historical records and archaeological relics, drawing on the research results of previous generations, discusses the implementation of the relevant system of the Tang Dynasty, mainly related to the entry and exit control, borderland, market, currency, commercial tax, caravansaries, judicial system, and even the country system and national concept. The sequence of discussions is broadly based on the process of transit trade, taking into account the Silk Road from east to west. Some of these systems spread to the neighboring countries along the Silk Road, for these countries like, imitate, promote their social development, become part of their traditional culture, it's worth to pay attention and deep research.
