钠元素是水产品中广泛存在的营养元素，钠的含量是食品营养标签中唯一一种强制标明的矿物质，其准确测量也随之成为了一个重要课题。由于钠元素的活泼性导致了其测试的困难，一般采用大型仪器方法检测，其简单分析方法的开发一直处于停滞不前的状态。本文中阐述了一种采用湿法消解与离子选择性电极简单快速准确测试罗非鱼等水产品中钠元素含量的方法，所用设备简单易得，其准确性和加标回收率都令人满意，值得广泛推广。“,”To Sodium element is widely presence in aquatic product. The content of sodium is the only mineral substance indicator mandatorily shown in the nutrition labeling of food. The accurate and rapid measurement became an important issue and was increasingly concerned. Its lively property leads to difficulties of its testing; the methods commonly used were relying on large-scale equipment. The development of its simple analysis method has been in a stagnant state. In this paper, tilapia filets were pretreated by wet digestion; and then quantitatively analyzed with ion selective electrode. The contents of sodium in tilapia filets were determined by this simple, fast and accurate method. The equipment used is simple and easy to get. The results indicated that accuracy and recovery rate were satisfied. The method is wel worth widely promoted.