After Shenguang-Ⅱ system is improved particulaly on beam quality the figure of filler reaches about 50%. The beam spatial distrubution is uniform. New N 31 type phosphate glass are used, the fluorescence life is increased from 250 μs to 330 μs. The gain ability is increased. The gain of 6 disks N 31 type phosphate glass compared with the gain of 8 disks N 21 type phosphate glass, the gain increased about 10%.