This research attempts to show the extent of the impact of rational philosophy on the modernist reading of the Holy Quran, in terms of being a basis for the interpretation of the Quranic text in their discourses, and in terms of its validity for use as a research method. The research lists selected models of modernist readings and their interpretations for the Quranic verses, which they tried to explain in the light of the principles, ideas and concepts of rationality, And then discussing and criticizing them, and that is in two demands, the first was devoted to explain the concept of rational philosophy and its pillars, and to explain the philosophical and scientific gaps in them in a scientific and objective way, and the second was devoted to present models of modernist readings based on them and criticize them with rational scientific evidence, and then present the findings of the research.