Inductive coupled plasma mass spectrometry (ICP-MS) was used to analyze the contents of 10 mineral elements in slag. After digested completely by HNO₃-HF-HClO₄, these samples were determined using the internal method. The recoveries for spiking samples were 78.8%－105.7%, and the relative standard deviations were 0.68%－8.29%. The range of the detection limits of elements was 0.002－6.68 μg·g^-1. The proposed method is simple, rapid and accurate, and could be used to analyze mineral elements in the slag.