A daylighting system (1) according to one aspect of the invention includes a daylighting apparatus (2) and an artificial light source apparatus (3) that emits light toward the daylighting apparatus (2). The daylighting apparatus (2) includes a base material (4) having light transmission property, and a plurality of daylighting portions (5) that are provided on a first surface of the base material (4), have light transmission properties and reflect light incident from a light incident end surface on a reflection surface. The artificial light source apparatus (3) emits at least light that enters the daylighting portions (5) from the light incident end surface and travels toward the reflection surface.