One of the important issues in religious beliefs is the issue of Mahdism and the issue of the emergence of the Imam. All divine religions believe in it and all are waiting for the savior of the end times. In Islam, special attention is also paid to it and many verses and narrations are dedicated to this matter. The ZAIDIS' belief bases on Mahdism are the need of society for a savior of the end times and a justice-spreader and a world savior, but they have a difference of opinion with the Imamiyyah regarding the savior. The Imamiyyah believe in the promised Mahdi, who is the twelfth Imam of the Shiites of the world, and they believe that he is in occultation and will reappear at some point and spread justice and make the world seek justice, but the ZAIDIS believe that any Imam who has the conditions for Imamate and rises is the Mahdi and the savior of the end times. With these interpretations, the most important difference between Zaidi Shiism and Imami Shiism is that the ZAIDIS' attitude towards Imamate has a more political color and flavor,While the Shiite Imamiyyah view of the Imamate is a religious and text-based view, the Zaydi view of the Imamate is based on the Fatimids and the uprising against Sayf. This article attempts to examine this issue with regard to verses, narrations, and rational reasons and to prove the main reason for the occultation of the Savior of humanity, which is the lack of readiness of humans, and then to specify our mission in preparing and preparing and paving the way for the emergence of that universal reformer.