Abstract: The crystal phase structure of rare-earth strontium aluminate luminescent fiber was tested by XRD,and the spectroscopic properties were analyzed by fluorescence spectrophotometer.At the same time,the storage and luminescent rules at different exciting illuminances and exciting time were measured.The experimental results indicated that the crystal phase structure and spectroscopic properties of luminescent materials were not changed by the making process of fiber;the luminescence properties of luminescent fiber were originated from the 4f()~65d~1→4f()~7 transition of Eu~(2+);the illuminance intensity of luminescent fiber was saturated after about several seconds to two minutes of lighting,the saturation value and the time to reach this value were decided by the intensity of exciting light;afterglow decay was composed of rapid-decaying and slow-decaying processes,and this was caused by the different depths of defect energy level in the materials.