During the period of Northern and Southern Song Dynasties, economic relations between China and Champa Kingdom experienced a rapid development on the basis of proceeding dynasties, depending on the further enhancement of Sino-foreign relations and the unprecedented flourishing of marine trades. On the basis of consulting as many as possible historical materials, through the analysis of the government contribution and market trade, this thesis focuses on the comprehensive examination of the bilateral economic and commercial relations between the two countries and proceeds to a preliminary study of some closely related issues.