People with disabilities selected by the political party's policy decision may be of some help to resolve the complaints of the socially underprivileged. However, their participation in politics was not active regardless of their intentions. As they did not have democratic legitimacy they had limitations in their activities as subjects of political compromise. Past members of the parliament with disabilities were inevitably excluded from fundamental institutional reform or party innovation for the socially underprivileged. In this paper, I will examine the constitutional meaning of strengthening political participation and representation of the socially weak, especially the people with disabilities, and the problems of the current electoral system and parliamentary system and then, seek an appropriate approach to improve concrete measures to strengthen political representation and participation of the people with disabilities in politics.