The Hajj ritual, as one of the fundamental pillars of Islamic law, in addition to its religious dimension, has extensive social, cultural and political functions that can pave the way for the formation of convergence in the Islamic world. This research, using a descriptive-analytical method and utilizing Islamic sources as well as contemporary theoretical studies, examines the capacities, dimensions and obstacles to the convergent function of Hajj. The findings indicate that Hajj plays a fundamental role in consolidating the unity of the Ummah by strengthening the common identity of the Islamic Ummah, creating intercultural connections among Muslims, reproducing the original monotheistic and justice-oriented values, and creating a platform for interaction among the elites of Islamic countries. On the other hand, sectarian differences, dominant political interpretations, security approaches in managing the ceremony, and the influence of arrogant powers are among the main factors weakening this capacity. The results of the research show that redefining the social philosophy of Hajj within the framework of the discourse of the new Islamic civilization and strengthening cultural diplomacy among Muslim countries can play an effective role in reviving the convergent functions of this divine duty.