To provide an edge light type decorative lighting system excellent in color rendering property by neatly arranging a high luminance LED on a printed circuit board provided with a space from the base bottom part of a lamp house, and combining the combination of color tone with an electronic control device including a luminance regulating and flashing device.

In this edge light type decorative lighting system, a high luminance light emitting diode LED 1 is used as a light source. For the arrangement relation between a segment 2 and the LED 1, the LED 1 are neatly arranged in five positions in total of four angle parts of a square having a prescribed form and one position on the intersection of the diagonals on a printed circuit board 6 provided with a space form the base bottom part 5 of a lamp house 4. The setting of a control panel 11 is finely controlled while adding a time different regulation to fade-in/fade-out control through the combination of emitting color and an electronic control device 3 including a dimming device and flashing device. Thus, an edge light type decorative lighting system using a high luminance light emitting diode excellent in color rendering such as light composition can be provided.