Abstract: This article uses X-ray fluorescence spectroscopy to quantitatively analyze and determine thecontent of silicon ，manganese , and phosphorus in high-carbon ferromanganese alloys. The research meth-od uses national standard samples supplemented by self-made standard samples to draw a working curvein the equipment software. According to the working curve and ARL9900 X-ray fluorescence spectrometermcasures the intensity and calculates the content of silicon ，manganese，and phosphorus in high-carbonferromanganese. This method has been used for production analysis，which can reduce the analysis costand labor intensity ，and at the same time it avoids the uncertainty caused by human factors， and can fullymeet the requirements of daily production analysis.

Key words: high-carbon ferromanganese, X-ray fluorescence spectrometry, ferromanganese, alloy analysis