X-ray fluorescence analysis is widely used in field survey and laboratory analysis. In this paper, the Fourier transform method was used to subtract the background and the maximum likelihood solution was used to resolve the spectrum.% 能量色散X射线荧光分析仪可以同时对多种元素进行快速测量，广泛应用于野外和室内分析。本文对其仪器谱的处理方法进行了研究，使用傅里叶变换法对散射本底进行扣除，使用极大似然估计法对谱线进行解析。
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