The esoteric approach in later perspectives and then in the fields of Sufism, Imamiyyah and Ismailiyyah led to the growth of esotericism in the 9th and 10th centuries AH with profound and sometimes similar differences. The aim of this research is to analyze the process of expanding the esoteric approach in the mentioned fields and to examine the intellectual connections between these schools. Therefore, by searching for the use of the term esoteric approach in the mentioned fields, it was concluded that how this approach went from limited intellectual reviews to broader circles and reached widespread acceptance. The present research, which was conducted with a fundamental approach and descriptive-analytical method, relying on Persian and Arabic sources and a comparison between the epistemological levels of esotericism, reached the following results: The tendencies of all three fields to be connected to each other were due to the sectional factors of the era, and what caused the connection of esoteric concepts in the three fields was based on the political, cultural and ideological requirements of different periods. The continuity of esoteric concepts in the three areas, despite differences in ontology and interpretive methods between Imamiyya, Ismailiyya, and Sufism, has always existed, and the existence of common concepts, the need for a community space, and the benefit of Shiite dynasties and commanders and rulers of different eras, intensified this multifaceted approach.