Disclosed herein is a surface lighting apparatus. According to the present invention, the surface lighting apparatus comprises a light guiding unit for dispersing light input from light source through patterns formed in the light guiding unit, a reflecting unit formed at a lower part of the light guiding unit to reflect light being out among dispersed light of the light guiding unit, a diffusing unit adjoining an upper part of the light guiding unit and scattering light dispersed from the light guiding unit, and a refract guiding unit formed between the light source and the light guiding unit and concentrating total light input by refracting at least a part of light input from the light source to guide the light to the light guiding unit.