Solar Stokes Spectrum Observation at Yunnan Astronomical Observatory

In the first part of this paper, we propose that the term'solar spectrum'should be generalized to Stokes (unpolarized and polarized)spectrum rather than the ordinary (unpolarized)one which is included in the former as the first component.The significance of Stokes (polarized) spectrum observation is emphasized.In the second part, a sample of recent Stokes spectrum observation carried out at Yunnann Observatory is shown and it signifies the beginning of such observation in China.