PROBLEM TO BE SOLVED: To provide a method for evaluation of luminous quantity measurement stability, a device for evaluation of luminous quantity measurement stability, a program for evaluation of luminous quantity measurement stability and a recording medium therefor, by which light source characteristics of a luminaire with a heat radiating structure can be made clear, and the evaluation of the stability in measuring luminous quantities of such a luminaire can be performed with good accuracy.SOLUTION: A method for evaluation of luminaire's luminous quantity measurement stability comprises the steps of: calculating luminous flux value variation characteristic parameters including an initial luminous flux value , a quantity of the change in a luminous flux value and a time constant from luminous flux values of an LED luminaire based on [Formula 1]; calculating a stationary value of luminous flux of the LED luminaire based on [Formula 4]; and calculating a degree e(t) of luminous flux value output stability which is a result of comparison between the stationary value and the luminous flux value based on [Formula 2].
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