Abstract: Experimental study on the plasma mass spectrometry method for determination of heavy metal copper zinc cadmium Gannan tungsten mine in a mining area of the surrounding soil. In the experiment， the advantages and disadvantages of several sample pretreatment methods are discussed， and the selection of internal standard elements and the interference of coexisting ions are investigated. The accuracy and stability of the method are also discussed. In the experiment， the RSD<3% of the sample was measured， and the recovery rate was 97%~103%. The experimental results were compared with the mass spectrometry and atomic absorption spectrometry. The results of the two methods were consistent， no significant differences were obtained. The experimental results show that the method of detecting Cu and Zn in soil by using plasma mass spectrometry