Traveling Notes of the Western Regions in Great Tang Dynasty is not only a historical and geographical work about the western regions, but also an important historical work of Buddhism. The author is Xuan Zang, a famous monk, Buddhist theorist and translator in the Tang Dynasty.According to Xuan Zang's travel route, the twelve volumes of the book give a detailed description of the geographical situation, land and water transportation, climate, products, ethnic groups, language, history, politics, economy, religion, culture, customs and habits of the city-state, region and country along the way, especially the situation of local religious temples and Buddhist stories and legends. The content is very rich, which is a rare work for the Chinese people at that time to understand the external world. This book is also a precious historical material for studying the ancient history of India and the history of Indian Buddhism. It is an indispensable and important document for Archaeology in Central and South Asia and has great historical value.