Using a flow rate of helium gas in KED mode for GBW10020 (GSB-11) Li、Be、Na、Mg、Fe、Ni、Cu、Zn、As、Se、Mo、Ag、Cd、Ba、Tl、Pb、Bi Perform quantitative analysis on 17 elements. This article uses the Yiyao M6 microwave digestion instrument for digestion, and the core instrument iQuad 2300 ICP-MS of Hengsheng is injected once to accurately analyze 17 elements in citrus leaf GBW10020, all of which can be within the scope of the quality control certificate. In order to provide reference for more instrument configuration users, aerosol dilution technology is specifically not used in this experiment.