Abstract: The phase, luminescence spectrum, chromaticity and afterglow properties of red, yellow and blue rare-earth strontium aluminate luminescent fibers were measured by XRD, fluorescence spectrometer, spectral scanning-meter and illumi- nometer. The experiment results indicated that: the emission peak of yellow and blue luminescent fibers were located at 520nm,which were caused by transition of Eu2+; the crystal phase structure of red luminescent fiber was destructed, making the yellow light emission of 580nm, this maybe the transition of Dy3+of rare-earth strontium aluminate; the chromatic light of these three fibers were yellow, yellow-green and green; the illumination of these luminescent fibers showed the rule of red