Abstract: In order to supply the high frequency, wide spectrum, large dynamic infrared images for the semi-physical simulation test and evaluation system of the infrared-imaging seeker, the reflective electrically-addressed infrared spatial light modulator based on infrared sheared stress polymer network liquid crystal (SPNLC) was developed by making use of the electro-optical modulation mechanism of SPNLC, and a sample of electrically-addressed infrared SPNLC was fabricated. During the development, the control program was compiled by the aid of LabView, and the data register and control register were adopted to offer the read-in signal for the coding magnify circuit to drive every pixel. A reflective electrically-addressed infrared SPNLC spatial light modulator, whose thickness is 13m, was obtained by repetition test. The frame frequency of infrared images is 100Hz while the temperature of the blackbody is 300℃ and the driving voltage is 60V. The output maximum temperature difference is higher than 15℃.