The invention relates to a method for measuring the contents of main elements in amorphous and nanocrystalline strips. The method comprises the steps of: applying a sample; adding a defined amount of hydrochloric acid and nitric acid, and heating for dissolving the sample; continuously heating to ensure that the solution is concentrated to a certain volume, taking down and cooling; washing the cup wall by using Milli-Q water to ensure that the solution is cooled after reaching a certain volume; dropwise adding a defined amount of hydrofluoric acid to ensure that the sample is fully dissolved; dissolving to be constant volume; adopting a reagent blank, and adding single standard stock solutions with different volumes to be constant volume; measuring spectral line intensity of each element in a mixed-standard solution under a preferable wavelength, and drawing a working curve; and measuring a spectral line intensity of each element in a solution of the sample to be measured under the preferable wavelength, and automatically determining the concentration of each element in the solution of the sample according to the working curve by a computer. According to the invention, the technical problems of measurement errors, long measurement flow, small range and the like caused by pre-treatment are solved, a reasonable sample pre-treatment method and an optimal analysis condition of an apparatus are determined, and the purpose of simultaneously and rapidly analyzing the elements is achieved.