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[Objective] This research aimed to establish an inductively coupled plasma mass spectrometry (ICP-MS) method for determination of five kinds of heavy metals (Pb, Cd, Cu, As and Hg) in Dendrobium candidium Wall. ex Lindl. [Method] The samples were digested in HNO3-H2O2 acids system by closed vessel microwave digestion. At the same time, internal standard was added to avoid the matrix effect. [Result] The five kinds of heavy meals all showed good linear relationships, and the correlation coefficients ranged from 0.998 2 to 0.999 9. The detection limits of the five kinds of heavy metals were in the range of 0.008-0.750 "g/L, while the standard recovery rates were in the range of 90.4%-96.9%. The relative standard deviations ranged from 1.6% to 8.2%. The heavy metals in the Ginseng and Astragalus national standard samples were determined by the established ICP-MS method, and the results were in conformity with the standard values. [Conclusion] The established method has s$mple and conven$ent operat$on and accurate and rel$able results, and it meets the requirements by determination of heavy metals in Dendrobium candidium Wall. ex Lindl. [ABSTRACT FROM AUTHOR]