The identity developed via cultural exchange in Nanzhao is a multiple-tier identity,and has obvious instrumental characteristics.Nanzhao’s political,military and cultural imitation of Empire Tang is a system choice for the former to establish a political identity with the latter,which helps the former to show the integrity characteristic of the Tang Empire.The multiculturalism formed by cultural exchange,the Gaoshen System and the Dachongpi System formed during the cultural exchange between Nanzhao and Tubo and embodying the characteristics of Tubo,laid the cultural foundation for the construction of circumstantial identity,while the development of Jimi Policy provided the space of system.On such a basis,Nanzhao timely presented corresponding cultural characteristics formed in cultural exchange by the adaptation,change and need of its relationship with the Tang Empire and Tubo.