近年来，钢筋混凝土构筑物的腐蚀成为了造成结构破坏，影响结构安全性的头号杀手。外加电流阴极保护法作为控制混凝土钢筋腐蚀的一种有效电化学方法，符合海水池钢筋保护的要求，且有效性高，保护程度和年限较长，得到了国内外的普遍认可。对复杂的海水池混凝土钢筋阴极保护进行介绍，阐述了复杂构筑物外加电流阴极保护遇到的各种问题。

In recent years, corrosion of reinforced concrete structures has become the number one killer that causes structural damage and affects structural safety. The impressed current cathodic protection method is an effective electrochemical method to control the corrosion of concrete steel bars, which meets the requirements of seawater pool steel protection, and has high effectiveness, long protection degree and longevity, and has been universally recognized at home and abroad. This paper introduces the cathodic protection of concrete steel bars in complex ocean ponds, and expounds the various problems encountered in the impressed current cathodic protection of complex structures.