Abstract: In order to achieve multi-color temperature and multi-magnitude output, as well as real-time adjusting of magnitude and color temperature, we designed a new type of calibration single star simulator with adjustable magnitude and optical spectrum output. We used xenon lamp and halogen tungsten lamp as the light source; with different multi-beam narrow band spectra with light of varying intensity, we realized the control of spectral band and temperature of star. When the light source with different spectral characteristics and color temperatures went into the magnitude regulator, we only controlled and adjusted the light luminosity of the light energy attenuation. The entire system was assembled in laboratory，and the controlling and testing platform was set up. Besides,the experiments were carried out and the comparison results between the standard magnitude and measured magnitude under different color temperatures were given.