A surface illumination fixture comprising: a surface illumination light-source device converting light from a point light source (36, 36a, 36b) having strong directivity into surface illumination; and an illumination fixture main body holding the surface illumination light-source device, the surface illumination light-source device including a casing having a flat plate part (35, 35a, 35b) being used to attach the surface illumination light-source device to the illumination fixture main body, a lateral plate part (32, 33; 32a, 33a; 32b, 33b) standing from the flat plate part (35, 35a, 35b), and an opening on a surface opposite to the flat plate part (35, 35a, 35b), and including a plurality of such point light sources (36, 36a, 36b) disposed on the flat plate part (35, 35a, 35b), and a light-guide reflection plate (40, 40a, 40b) covering the opening, the casing and the light-guide reflection plate (40, 40a, 40b) being formed by members having a high light reflectance and a low light transmittance, the light-guide reflection plate (40, 40a, 40b) being divided into regions corresponding to the point light sources (36, 36a, 36b), and each region being formed to have a lower light reflectance and a higher light transmittance as the distance from the corresponding point light source (36, 36a, 36b) increases, wherein the surface illumination fixture further comprises a light shielding plate having a predetermined height and standing from the lateral plate part (32, 33; 32a, 33a; 32b, 33b) in an upright manner, and the casing and the light-guide reflection plate (40, 40a, 40b) are formed into an annular shape or a disc shape. a surface illumination light-source device converting light from a point light source (36, 36a, 36b) having strong directivity into surface illumination; and an illumination fixture main body holding the surface illumination light-source device, the surface illumination light-source device including a casing having a flat plate part (35, 35a, 35b) being used to attach the surface illumination light-source device to the illumination fixture main body, a lateral plate part (32, 33; 32a, 33a; 32b, 33b) standing from the flat plate part (35, 35a, 35b), and an opening on a surface opposite to the flat plate part (35, 35a, 35b), and including a plurality of such point light sources (36, 36a, 36b) disposed on the flat plate part (35, 35a, 35b), and a light-guide reflection plate (40, 40a, 40b) covering the opening, the casing and the light-guide reflection plate (40, 40a, 40b) being formed by members having a high light reflectance and a low light transmittance, the light-guide reflection plate (40, 40a, 40b) being divided into regions corresponding to the point light sources (36, 36a, 36b), and each region being formed to have a lower light reflectance and a higher light transmittance as the distance from the corresponding point light source (36, 36a, 36b) increases, wherein the surface illumination fixture further comprises a light shielding plate having a predetermined height and standing from the lateral plate part (32, 33; 32a, 33a; 32b, 33b) in an upright manner, and the casing and the light-guide reflection plate (40, 40a, 40b) are formed into an annular shape or a disc shape.