After pretreatment by microwave digestion and selection of spectral line at the wavelength of 309.311 nm as the analytical line of vanadium,the content of vanadium in high-speed tool steel was determined by inductively coupled plasma atomic emission spectrometry.In our experiment,the parameters of microwave digestion was determined,the working parameters of the instrument was optimized and the suitable analytical line was chosen.Our experimental results illustrated that the determination method was not affected by the iron matrix,which could be eliminated by matrix matching.Combining the matrix matching and precision interpolation method,the precision and accuracy of the test could be improved.When the method was applied to determine certified reference materials and actual samples,the determination results were in keeping with the certified values.Furthermore,the method could be applied for the determination of high content of vanadium in high-speed tool steel.