Abstract: The guard system from tothe Five Dynasties early Song is obviously different from that of Tang Dynasty,among the differences,the most noticeable is the establishment and improvement of the bodyguard system.The process of establishing and improving the bodyguard system permeated the Five Dynasties.In this system,the establisment of cavalry guard,the ranks of officers and guard department,etc.experienced several changes and finally came into being.Up to Song Dynasty,it had experience many changesand reforms.H...