Under the standard test conditions,the spectral form,the irradiance inte nsity and the spectral mismatch factor of artificial solar light sources are important facto rs that affect the accuracy of solar cell device test results.This paper takes the standardsolar spectrum AM1.5as areference,then calculates and analyzes the changes of thespectral misma tch factor between the four commonly used artificial solar light sources (Arc lamp,Q- Flash lamp,Q-Flash W lamp and ELH lamp) and thestandard solar spectrum AM1.5from the perspective of spectral mismatch,and also calculates and analyzes the changes in the output parameters of the crystalline silicon cell under the irradiation of these four ar tificial solar light sources.Calculation results show that the spectral mismatch factor of Arc lamp a rtificial so lar light source is 0.979,and the output parameters of the crystalline silicon c ell are closes t to the output parameters under the standard solar spectrum AM1.5spectral irra dation;due to the influence of spectral mismatch,the output parameters of the crystalline silico n cell under the irradiation of four different artificial solar light sources will change signif icantly compared with the output parameters under the irradiation of the standardsolar spe ctrum AM1.5spectrum.