Iron ore is an important raw material for steel production enterprises, and the composition analysis of iron ore is very important throughout the entire steel smelting process. In the past, wet chemical analysis methods were often used in daily production. During sample processing, the method of alkali melting followed by dissolution was often adopted. When analyzing different elements, complex methods such as filtration and separation were also used to eliminate interference between elements. The analysis of iron ore using wet chemical methods is slow, and the dissolution and separation processes are prone to human errors, making it difficult to conduct large-scale analysis. X-ray fluorescence spectroscopy has the characteristics of fast analysis speed, relatively simple sample preparation, small accidental errors, and high analysis accuracy. It has been widely used in the analysis of various raw materials, including the composition analysis of iron ore. However, due to the complex composition of iron ore, the high and wide range of iron element content, and the obvious matrix effect, these factors have adverse effects on X-ray fluorescence analysis. When directly analyzing iron ore using the compression method