两宋以降,海上丝绸之路渐次勃兴、东南“海洋中国”浮现,在宋元、明至清中叶、晚清民国不同阶段,南中国沿海外贸港口的选址、功能、贸易方式、空间形态等均持续变动,其中,地理、规制、市场三大驱动因子的权重此消彼长,成为观测中世纪以来中国长期经济变革趋向的一个窗口。该文通过对两宋以来南中国外贸港口偏移中三个关键因素的追踪与分析,探讨10世纪以来,贸易经济下东南“海洋中国”的演进轨迹、趋势性方向、动力来源,寻找中国经济长期表现的历史轨迹与内在的必然趋向。 In the Song and Yuan Dynasties, from the Ming Dynasty to the mid-Qing Dynasty and at different stages of the Republic of China in the late Qing Dynasty, the site, function, trade mode and space of the ports of trade along the South China Sea were gradually emerging. And so on. Among them, the weight of the three major drivers of geography, regulation and the market has been shifted to the opposite, becoming a window for observing the long-term economic transformation in China since the Middle Ages. This paper traces and analyzes the three key factors in the migration of South China’s foreign trade ports since the Song Dynasty, and explores the evolution trajectories, trend directions and motive sources of the Southeast China Sea under the trade economy since the 10th century Long - term performance of China ’s economy: historical trajectory and inherent inevitable trend.