Abstract: The Han Dynasty (206B.C.-220A.D) is the first historical period in which Han nationality unified and promoted with other nationalities in Guizhou.Nanyi road was built and postal kiosks constructed along the main lines of communication,which had strengthened the contact between the central court and Guizhou,and changed the situation of traffic block in Guizhou plateau to a certain extent.The officials and wealthy people of the Han Dynasty developed Guizhou and had garrison troops or peasants open up wasteland and grow food grain.They not only consolidated the social foundation of the rule by the Han dynasty in Guizhou,but also brought their advanced production tools and labor technology from the central plains of China,which promoted the development and progress of social economy in Guizhou.Along the Nanyi road,the cultural relics such as the unearthed copper cart and horse,bath basin whose circumference is five feet,iron tools,seals of the central plain type,etc indicated that the migrated Han Nationality had settled down and multiplied in Guizhou plateau.

Key words: the Han Dynasty(206B.C.-220A.D), cultural relics, Nanyi road；postal kiosk；opening up wasteland and growing food grain by garrison troops or peasants of the Han nationality；unifying and promoting each other