The invention discloses an environment-friendly optical fiber lighting system. The environment-friendly optical fiber lighting system comprises a sunlight collecting device, a sunlight receiver, a light guiding optical fiber, a light coupler, an inner optical fiber bundle and indoor lighting equipment. The output end of the sunlight collecting device is connected with the input end of the sunlightreceiver. The output end of the sunlight receiver is electrically connected with the input end of the light guiding optical fiber. The output end of the light guiding optical fiber is connected to the input end of the inner optical fiber bundle through the light coupler. The output end of the inner optical fiber bundle is connected to the indoor lighting equipment. The indoor lighting equipment comprises a first LED lamp set, a second LED lamp set, a concave lens, a concave lens base, a flange, a lampshade, a lamp base and an LED lamp control device, and the LED lamp control device controls the on-off state of the first LED lamp set and the second LED lamp set according to indoor lighting situations. According to the environment-friendly optical fiber lighting system, indoor luminance canbe stabilized at the set value all day, and the defect that an existing optical fiber lighting lamp is instable in lighting is overcome.