三线建设,是始于20世纪60年代中叶的一场以战备为中心的经济建设战略,距离现在已经近半个世纪了。对三线建设的评价,在政治上基本形成了结论。但是,学术上的研究,目前尚未见到全面的定论。特别是21世纪以来,评价三线建设的客观环境在国家安全、经济效益、区域经济发展等方面发生了变化。因此,重新评价三线建设,不仅是时隔近半个世纪的反思,也是在新的历史条件下,使我们的评价更加科学、全面的需要。 The construction of the third line started in the mid-1960s as a war preparedness-centered economic construction strategy, which has lasted for nearly half a century now. The evaluation of the third-line construction has basically reached a conclusion in politics. However, academic research has not yet seen a comprehensive conclusion. Especially since the 21st century, the objective environment for evaluating the construction of the third line has changed in aspects of national security, economic benefits, and regional economic development. Therefore, to re-evaluate the construction of the third line is not only a reflection of nearly half a century later, but also makes our evaluation more scientific and comprehensive under the new historical conditions.