Abstract:ObjectiveTo study K,Na,Ca,Mg,Mn,Cu,Fe,Zn eight different kinds of elements quality in Sagina japonica (SW.) Ohwi..MethodsAtomic absorption spectrometry. Results The results showed that Sagina japonica (SW.) Ohwi is rich in trace elements which human body needs.Conclusion The trace elements play an important medical role in Sagina japonica (SW.) Ohwi.. Our study provides new scientific foundation for further study and general application of Sagina japonica (SW.) Ohwi.