随着高人口密度的海岸带地区“土地赤字”问题的出现,沿岸地区的土地稀缺性日趋明显,新一轮的围填海项目相应准备实施,但就以往的工程效果来看,仍然存在着准备不充分,经济效益不明显,工期过后生态问题凸现的状况。本文从经济学的角度分析围填海工程可能引发的负外部性问题,力求为今后沿海开发管理提供理论参考。 With the advent of the issue of “land deficit” in coastal areas with high population density, the scarcity of land in the coastal areas is becoming increasingly apparent. A new round of reclamation projects are to be implemented accordingly. However, in the light of past project results, There are not enough preparation, economic benefits are not obvious, ecological conditions highlight the situation after the end of the situation. This article analyzes the possible negative externalities caused by reclamation projects from the economic point of view, and seeks to provide a theoretical reference for future coastal development and management.