关于SFS算法的综述性文章，介绍了求解传统SFS 问题的4 类方法中几个典型算法的基本原理及求解方法, 并给出了实验结果, 然后从算法解的唯一性、对真解的逼近程度、求解效率及适用范围等方面对这4 类算法进行了比较和评价.-Review articles on SFS algorithm, this paper introduces four kinds of methods in solving traditional SFS in basic principle and solving method of several typical algorithms, and experiment results are given, and then the uniqueness of solution from the algorithm, the degree of approximation of the true, solving efficiency and scope of application of the four kinds of algorithms are compared and evaluated.