The standard of the irradiation spectrum by each kind ofcells is ruled for raising the precision of measurements. However,by nature, the application of Reference Cell Methodcauses errors.Recently, LED lamp has widely been used for a trafficsignal and an illuminator because of their longer operating lifeand high energy eficiency. The technique developed in thepresent work establishes the evaluation method with LEDequipment for solar cells measurement. This paper is intendedto report the results of examining the capability ofevaluating methods with the equipment using LED for solarcells measurement. The tests have been calculated using simulation.