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 . <EOS>