南宋末期,宋蒙之间爆发了持续近半个世纪的战争。四川战场的钓鱼城防御是一个持久、动态的过程,从地缘关系的角度出发,钓鱼城依托适宜的城池区位逐步形成了自身的防御体系,成为了以重庆为核心的山城防御体系前沿防线的重要组成部分。钓鱼城防御的持久性有效屏障了夔渝,抵御了来自北面蒙军的进攻。 In the late Southern Song Dynasty, the war broke out for nearly half a century between Song and Mongolia. Fishing town defense in Sichuan battlefield is a long-lasting and dynamic process. From a geopolitical perspective, Fishing Town has gradually formed its own defense system based on the suitable city location and has become an important frontier defense of the mountain city defense system with Chongqing as the core component. Diaoyu Islands defensive durability of the effective barrier, against the Mongol attack from the north.