Contemporary philosophy is one of the most important philosophies in human history, and this philosophy came as a critical philosophy of modern philosophical thought, represented by modern philosophy and beyond, and the strategy of dismantling is one of the most important fruits of postmodernism, through which some thinkers tried to scatter texts to reveal what is hidden within the text, and the Lebanese thinker Ali Harb is one of the most important Arab thinkers affected by this strategy, and many Arab intellectuals have been influenced by But Arab intellectuals tried to apply the critical philosophy through this strategy to the Islamic heritage, to find a loophole through which to infiltrate the constants of The Islamic Hanif, to appear the texts of The Islamic State in front of everyone and thus drop its sacredness, and the research aims to expose this philosophy with study and criticism, under the title: Post-dismantling critical study in the thought of Ali Harb.