As a commonly used display device, digital micromirror device (DMD) uses the traditional pulse width modulation (PWM) method to display grayscale images, which can not meet the demand of high frame rate display due to the limitation of minimum pulse width. Thus we proposed a high frame rate display technology based on composite coding of illuminant and DMD in this paper. By adding the modulation of illuminant, the problem of exponential growth of bit plane display time with bit plane level caused by pulse width modulation is avoided. A display system consists of driver module, illuminant and DMD was built. In our test, by applying the illuminant modulation to lower 4bit and pulse width modulation to higher 4bit, the display system can achieve 2461Hz frame rate displaying 8bit grayscale image.