Abstract: A method for determination of the contents of 12 trace elements in Solidago canadensis and Solidago decurrens was developed by ICP-MS using microwave digestion. The matrix effect and signal drift were compensated by using the internal standard elements(Ge and Bi). The precision of measurement ranges from 2.5% to 8.9% in terms of relative standard deviation. The recoveries and the limits of detection are in the range of 95.2%—107.1% and 0.002—0.057 μg•L^-1 respectively. It indicated that the proposed method has the advantages of simplicity speediness and sensitivity. The analytical results indicated that there were comparatively rich elements in Solidago canadensis and Solidago decurrens, such as Ca, Mg, Fe, Mn and P, especially the concentration of Ca, Mg and P. In addition, a comparison of the contents of trace elements between Solidago canadensis and Solidago decurrens indicated that Solidago canadensis was rich in the trace elements such as Ca, Cr, Mn, Zn, Pb and Ni, and Solidago decurrens was rich in the trace elements such as Mg, P, Fe, Cu and Se.