A fiber display device (200) includes a light source (21), a fiber binding (27) for transmitting light beams from the light source and a brightness modulating system (29) for modulating the transmission of the light beams. The fiber binding includes a plurality of fibers (272), one terminal end of the fibers acting as a light incidence terminal for receiving light beams from the light source, the other terminal end of the fibers acting as a display terminal. The brightness modulating system is disposed between the light incidence terminal and the display terminal. This simplifies the structure and reduces the cost of the fiber display device.