In the present invention the sunlgiht collecting device includes semi-circular dome with light refracting prism in the south side; or includes one transparent plane with up-convex arced reflecting wall on the north side. The sunlight conducting system includes a sunlight collecting device, light conducting pipe with lower end inserted indoor below the device, and light scattering device connected to the light conducting pipe. The inner wall of the light conducting pipe may be provided with reflecting film. By means of light refracting and reflecting principle, the sunlight conducting system with simple structure has enlarged lighting area, raised light strength and high light conducitng efficiency. |