In the cultural concept and the institutional arrangement of imperial China, there were both emphasizing the center of men's power as well as denying Matriarchy, and confirming mother power or even depending on it because of the idea of filial duty and the basic defects of monarchy. Thus the following situation was formed: on one hand, the empress &
concubine to
interfere with politics was condemned and forbidden, on the other hand, the facts of the empress & concubine to interfere with politics occurred frequently. However, the legitimacy
resource of the empress & concubine to interfere with politics mainly came from the filial duty in the
traditional ideology, and its legitimacy resource in
institution was insufficient. The so\|called calamity from women was resulted from the mutual participation of the ruling group. From the defects in the design of the institution and the contradiction of linguistic system, which were discussed on the above, we can further find the serious defects of the traditional political thinking and political wisdom without any difficulties.