In contemporary research on the history of Medieval scholasticism, the debate among researchers often focus on whether scholasticism has real inherent connection with Christian faith, and their disagreements on this issue mainly originate from their difference about the role of faith in Philosophy. Some scholars regard faith as an external interference or a restriction on reason, and thus think that scholasticism has no real inherent connection with Christian faith. But in the view of those who regard scholasticism as Christian Philosophy, faith is the necessary complement to and base of reason, and thus plays a positive role in promoting philosophy. By evaluating the main arguments of both sides and reflecting some absolute inclinations in them, we make a more concrete analysis of the relationship between scholasticism and Christian faith, and the related issue of "the conceptual legitimacy of Christian Philosophy".