特征参数和相似分类方法是一种新的基体效应校正方法。该方法的应用使得EDXRF在基体复杂的矿山及钢铁企业有了更为广阔的应用前景。介绍了其基本原理及在重钢应用效果。 Characteristic parameters and similar classification method is a new method of matrix effect correction. The application of this method has enabled EDXRF to have a broader application prospect in the complex mines and steel enterprises. Introduced its basic principle and the effect of heavy steel application.