Abstract: In the economic division of labor and cooperation, the Qinghai generations nationalities has formed a kind of national economy with diverse, complementary and symbiotic characteristics, at the same time, division of agriculture, animal husbandry and commerce of national economic generated. On the basis, the generations nationalities have established the pattern of harmonious coexistence in the process of economic exchanges,which is the important foundation of harmonious nationalities relations in Qinghai. The communication among nationalities explores the nationality patterns of unity in diversity.