A surface light source assembly, configured to be provided in a refrigerating compartment of a refrigerator, the surface light source assembly comprising: a light source and a light guide plate which is vertically illuminated by the light source, wherein the light source is provided along a first side of the light guide plate; and the light guide plate is configured to be vertically provided in the refrigerating compartment and is configured to cover a part of a rear wall of the refrigerating compartment, and the light source is provided along an upper edge of the light guide plate and vertically illuminates the light guide plate; a plurality of light guide spots is provided at a front surface of the light guide plate, wherein a through hole is vertically formed in the middle of the light guide plate, and comprises an upper edge close to the light source and a lower edge away from the light source, the through hole is configured to fix some devices on the rear wall of the refrigerating compartment; a first region is provided at a position of the front surface of the light guide plate close to the upper edge of the through hole, the diameter of each light guide spot in the first region is less than that of each light guide spot in the peripheral region of the first region, and the density of the light guide spots in the first region is less than that of the light guide spots in the peripheral region of the first region; a second region is provided at a position of the front surface of the light guide plate close to the lower edge of the through hole, the diameter of each light guide spot in the second region is greater than that of each light guide spot in the peripheral region of the second region, and the density of the light guide spots in the second region is less than that of the light guide spots in the peripheral region of the second region. and the light guide plate is configured to be vertically provided in the refrigerating compartment and is configured to cover a part of a rear wall of the refrigerating compartment, and the light source is provided along an upper edge of the light guide plate and vertically illuminates the light guide plate; a plurality of light guide spots is provided at a front surface of the light guide plate, wherein a through hole is vertically formed in the middle of the light guide plate, and comprises an upper edge close to the light source and a lower edge away from the light source, the through hole is configured to fix some devices on the rear wall of the refrigerating compartment; a first region is provided at a position of the front surface of the light guide plate close to the upper edge of the through hole, the diameter of each light guide spot in the first region is less than that of each light guide spot in the peripheral region of the first region, and the density of the light guide spots in the first region is less than that of the light guide spots in the peripheral region of the first region; a second region is provided at a position of the front surface of the light guide plate close to the lower edge of the through hole, the diameter of each light guide spot in the second region is greater than that of each light guide spot in the peripheral region of the second region, and the density of the light guide spots in the second region is less than that of the light guide spots in the peripheral region of the second region.