Abstract: A flexible light bar includes a flexible PC board having three electrical conducting paths in which the second electrical conducting path has two opposite ends respectively coupled to the first electrical conducting path and the third electrical conducting path and the first electrical conducting path and the third electrical conducting path each have a bonding metal contact at each of the two opposite ends thereof on the top and bottom sides of the flexible printed circuit board, and light emitting devices installed in the second electrical conducting path with the respective positive pole and negative pole respectively coupled to the first electrical conducting path and the third electrical conducting path. The light emitting devices are turned on to emit light upon connection of a DC power source to the bonding metal contacts of the first electrical conducting path and the third electrical conducting path.