This book makes a useful exploration of several theoretical issues in the study of the Silk Road， conducts a detailed investigation of the representative characteristics， roles， and values of the Silk Road culture， conducts an in-depth analysis of a number of important Dunhuang documents that can fully reflect the characteristics of the Silk Road， and pays attention to exploring the historical role and value of Dunhuang culture for the prosperity and development of the Silk Road， thus finding out the historical appearance of the routes along the Silk Road and many important sites， and correcting some mistakes of the predecessors. It highlights the great historical contribution and significance of the Silk Road.