For acquiring object spectral information, design vehicle miniature spectral measurement device. This paper mainly carried out related study of spectral measurement device miniaturization design and verification work based on vehicle platform, analyze influence of object atmospheric polarization on object spectral characteristics, and ensure structure of vehicle miniature spectral measurement device. Through analysis and calculation of digital transfer function of controlled object, decide the control strategy of control object, and tested precision positioning feature and image performance of verification. The results show that the equipment meet the basic requirements of the sky spectral observation.