On-board calibration system is an important technical component for effectively monitoring the performance of radiometric response of remote sensors,the development of hyperspectral technique and information application require more advanced on-board calibration system and more high performance index,which include challenging problems such as nonconforming to spectral distribution of solar,compact system structure and stability. This research promoted a rather full art scheme aiming at above problems,which included tow internal lamps taken as the light source,a minitype integrating sphere used as uniform body,a color temperature correction technique applied for improving the spectral distribution and a standard radiometer fixed interiorly for monitoring the stability of the system. Combining the spaceflight environment request,system design was performed and some experiment results suitable for definite engineering apllication were abtained. The output spectral radiance in visible-SWIR achieves 0.9 times of the radiance of exoatmosphere solar illuminating lambertian surface. The surface ununiformity is within 0.6% and the difference of radiance within ±15°is 1.5%,and the system weight and volume are less than 1.2 kg,0.002 m3 respectively. The bootstrap stabilizing time is 5 min and the radiation output within about 200 h keeps good stability.