A refrigerator comprising: a main body comprising a storage compartment, wherein the main body comprises an inner case defining the storage compartment; a door opening and closing the storage compartment; at least one shelf detachably coupled to the storage compartment to partition the storage compartment into a plurality of spaces; a light source unit illuminating the storage compartment; and at least one light-guiding member disposed on at least one end of the shelf, wherein the light source unit is disposed such that a portion of light generated in the light source unit enters the light-guiding member, wherein the shelf is horizontally disposed in the storage compartment, and the light source unit is disposed on the one surface of the inner case perpendicular to the shelf, wherein the light source unit is disposed on one surface of the inner case so as to face at least one region of the light-guiding member, wherein the light-guiding member is longitudinally disposed at one end of the shelf in left and right directions, and the light source unit is longitudinally disposed at left and right side plates of the inner case in a vertical direction, respectively, wherein the light source unit comprises a substrate and a plurality of light emitting diodes (51, 52, 53, 54, 55) disposed at different heights, and the number of light emitting diodes is larger than the number of the light-guiding members, and wherein a portion of the plurality of light emitting diodes irradiates light to the light-guiding member at the same height as the light-guiding member, and the other light emitting diodes irradiate light to the storage compartment at heights different from the light-guiding member, wherein the light-guiding member includes a scattering agent that diffusedly reflects light on the surface facing the shelf, wherein the light-guiding member is disposed at a side of an edge of the shelf which faces the door. a main body comprising a storage compartment, wherein the main body comprises an inner case defining the storage compartment; a door opening and closing the storage compartment; at least one shelf detachably coupled to the storage compartment to partition the storage compartment into a plurality of spaces; a light source unit illuminating the storage compartment; and at least one light-guiding member disposed on at least one end of the shelf, wherein the light source unit is disposed such that a portion of light generated in the light source unit enters the light-guiding member, wherein the light source unit is disposed on one surface of the inner case so as to face at least one region of the light-guiding member, wherein the light-guiding member is longitudinally disposed at one end of the shelf in left and right directions, and the light source unit is longitudinally disposed at left and right side plates of the inner case in a vertical direction, respectively, wherein the light source unit comprises a substrate and a plurality of light emitting diodes (51, 52, 53, 54, 55) disposed at different heights, and the number of light emitting diodes is larger than the number of the light-guiding members, and wherein a portion of the plurality of light emitting diodes irradiates light to the light-guiding member at the same height as the light-guiding member, and the other light emitting diodes irradiate light to the storage compartment at heights different from the light-guiding member, wherein the light-guiding member includes a scattering agent that diffusedly reflects light on the surface facing the shelf,