在吊桥中索塔最吸引人 ,是人们注意的重要目标。索塔形状展示出吊桥的大体特征和建桥年代的建筑倾向 ,并主导着建桥地域的环境空间。该文从装饰的索塔谈起 ,通过设计的合理性谈及最低成本概念 ,从而引出外形简洁的索塔。接着列举了大量的索塔实例 ,阐明日本吊桥塔形在二次大战前后的发展、最低成本和外观简洁的倾向。最后介绍索塔重要部位的成形处理及展望吊桥塔形的未来趋向 The most attractive tower in the suspension bridge, is an important goal people pay attention to. The shape of the tower shows the general characteristics of the suspension bridge and the building tendencies of the bridge construction, and dominates the environmental space of the bridge construction area. Starting with the decorative tower, this article talks about the concept of the lowest cost through the rationality of design, thus leading to the simple shape of the tower. Then a large number of examples of pylon were listed to illustrate the development of Japanese pylon in the world before and after World War II with the lowest cost and the simple appearance. Finally, the forming process of the important parts of the pylon and the future trend of the pylon tower outlook are introduced