Abstract: An illuminating ribbon has a decoration ribbon and a flexible circuit board with light-emitting devices. The decoration ribbon has two long sides, in which one of the two long sides has a sewing line. The flexible circuit board with light-emitting devices is disposed on the decoration ribbon and fixed to one long side of the decoration ribbon via the sewing line. The flexible circuit board with light-emitting devices includes an insulator with flexible flat surface; first and second electrical wires; N light-emitting devices; and a power device. The first and second electrical wires are embedded in parallel into the insulator with flexible flat surface. The N light-emitting devices are connected to the first and second electrical wires. The power device is connected to the first and second electrical wires to supply power to the N light-emitting devices and thus to generate light on the decoration ribbon.