||Artificial lighting accounts for a significant portion of the electric energy use in buildings. Therefore, daylighting is considered one of the fundamental design features of energy-efficient buildings, and daylighting is important roles of physiological & mental comfort improvement, learning & work improvement, health recovery in human. The purpose of this paper is to survey daylighting hybrid illumination system performance using building envelope attached type. This system is consisted of a reflecting heliostat, a hybrid light collector which is mixed reflecting type and refraction type, a mirror pipe type light transformer and a prism light distributor. The experiment data was collected from 9:00 am to 14:00 pm every 1 minute and the average was calculated for every 10 minute of the data collection to obtain the system efficiency. As a result, it was found that the daylighting hybrid illumination system can produce average 136 ㏓∼263 ㏓ in a room area of 4.5m wide x 3.0m length x 2.35m height. The results indicated that the daylighting hybrid illumination system can be good to KS intensity of illumination "F-pattern" basis (150-200-300 lx). In addition to, it was found that the daylighting hybrid illumination system can produce average uniformity ratio as 0.53∼0.76 in a room being installed light distributor.