自开商埠的推广与实践是中国现代化历程中一种独特的尝试模式。三都澳是近代福建省主动开放的商埠。笔者曾撰文探讨了三都澳主动开埠的历程与主客观条件。开埠后以埠际交易为主的对外贸易及其特征以及商埠对闽东北区域社会经济变迁的影响。① 承此 ,本文探讨的问题是 ,在近代中国社会经济发展的特定历史的制度条件下 ,以三都澳为实例的近代中国自开商埠对外贸易欠发展的不利因素或制约因素。文章接着认为对外贸易作为区域社会经济的唯一增长因素 ,既促进了闽东北社会经济的有限发展 ,又是导致该区域经济类型无法从传统经济向现代化经济转化的根本原因。结合前此对三都澳商埠对外贸易特殊运动轨迹的透视 ,通过对商埠对外贸易滞后性因素的分析 ,在看到这种作用的相对弱和局限性的同时 ,反思自开商埠体系在中国近代社会经济现代化过程中的历史地位和历史效用 The promotion and practice of commercial ports since its establishment are a unique attempt mode in the course of China’s modernization. Sanduao is a modern commercial port in Fujian province. The author has written about the history and subjective and objective conditions of Sanduao’s initiative to open its doors. The Influence of Port Trades on the Foreign Trade and Its Characteristics and the Trade Ports’ Influence on the Socio-economic Changes in the Northeastern Fujian. Therefore, under the specific historical institutional conditions of social and economic development in modern China, the unfavorable factors or restrictive factors of the underdevelopment of foreign trade by the self-opened commercial ports in modern China taking Sandu O as an example. The article then considers that foreign trade, as the only growth factor of regional socio-economy, not only promoted the limited development of social economy in northeast Fujian, but also caused the fundamental reason that the type of economy in the region can not be transformed from traditional economy to modern economy. Through the analysis of the special movement trajectories of SanDuOu commercial port in foreign trade before combining with the analysis of the lagging factors of the foreign trade of the commercial port, in view of the relative weakness and limitation of this kind of function, Historical Status and Historical Utility in the Process of Social Economic Modernization