An object of the present invention is to provide a freshness measurement device that measures the freshness of food simply and with high accuracy using a freshness label using an aggregation-inducing phosphor. A freshness measurement device of an embodiment includes an excitation light source that irradiates a phosphor layer of a freshness label containing aggregation-induced phosphor, the phosphor layer being obtained by immersing a first surface in an extraction liquid containing an extraction component of a measurement object, with excitation light from a second surface side in a front-rear relationship with the first surface, And a light receiving element that receives the fluorescence emitted by the phosphor layer on the second surface side. Figure 1

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