Culture and civilization are two separate categories, but their connection is such that culture plays the role of the foundations of civilization, and it is through a correct culture based on Islamic teachings that Islamic civilization can be observed. It seems that what has existed so far and throughout history - although it is commendable in cases such as architecture - has not been a complete symbol of Islamic culture, and we should observe the truth of Islamic civilization during the advent of Imam Mahdi (AS). This article has attempted to introduce the ruling spirit of Islamic and Mahdist civilization through descriptive analysis and by utilizing Islamic teachings in three components: God-centered (vision), Sharia-centered (action), and duty-centered (character), and to emphasize the need for the waiting society to recognize the cultural components and requirements of the Mahdist government and to bring it closer to it in its lifestyle so that it can be accepted and play a role in Islamic civilization. It should also be noted that the cultural guardians and executive forces of the Islamic society should base their material and spiritual activities on these principles. Of course, it should be noted that this article is the first step in moving towards Mahdist civilization, and the second step is in how to manifest these theoretical principles, which should be addressed in another article.