instrument system is uniformity control of illumination facula. And it is necessary to process the light beam with facula shaping and uniformity treatment. Usually, the light beam is treated with optical lens shaping or fiber coupling shaping technology. The treatment of optical lens shaping is to compress and rearrange the facula to an rectangle that we need through cylinder lens group to match the display. Aiming at the problem of the poor uniformity of the facula, the paper improved the method and designed a two-way and multiplex laser illuminating instrument, and the system overcame the defect of the poor uniformity of the facula. In experiment, it is recommended to use two laser illuminating instruments of good complementary and their optical axis have to be adjusted to be parallel, otherwise the illumination distance would be influenced by bad overlap effect. Compared the result of single laser illumination shown as Fig.1 with the result of double illumination shown as Fig.2 . It is obviously indicated that the laser illuminating instrument of two laser emitting sets is superior in the facula uniformity of, this is because complementary effect of the two beams with each other. Besides, we have designed 4-channel laser illumination instrument as well. And the comparison of the single channel instrument and 4-channel instrument is shown in Table 1.