A novel type of high precision reference source with variable polarization degree at large dynamic range(VPOLS-II) is introduced.The degree of linear polarization (DOLP) adjustment range of VPOLS-II varies from 0 to 0.72 within 0.46 mm to 2 mm.VPOLS-II produces linear polarization rays by four parallel glass plates.Through incorporating an integrating sphere and a beam expander system to guarantee the uniformity and parallelism of the outgoing beam,VPOLS-II generates rays with different DOLP through polarization state adjuster.DOLP values of VPOLS-II are tested.The calculated DOLP values of VPOLS-II and the measured ones by the spectropolarimetric analyzer (SPOLA) are compared and the factors influencing the uncertainty of DOLP are analyzed.The results show that the measured DOLP values of VPOLS-II are coincident with the theoretical ones within a 6 × 10-3 maximum difference when DOLP is less than 0.72.The combined uncertainty respectively is 8.8% ~0.936% and 0.936%~ 0.184% within DOLP of 0.01~0.09 and 0.09~0.72.This novel type of reference source meets the requirements polarimetric calibration in laboratory for polarized remote sensors and systematic performance test.