This research is normative juridical with descriptive analytical and qualitative approach, focusing on the main problem of how the role of Islamic boarding schools in the development of Islamic economics in the South Sulawesi region. Sharia economic discipline or fiqh muamalah is an original concept sourced from the Qur'an and Sunnah since the 7th century (Apostolate of Muhammad, 570-632 AD) contains Islamic teachings related to property, business or business, is the result of the ijtihad of the mujtahids related to laws or regulations. Humans in interacting with fellow humans, objects, and managing the contents of the universe based on the texts (Al-Quran and Assunnah). The results of the study indicate that the role of Islamic boarding schools in developing the Islamic economy has been substantively carried out for a long time and continuously in an integrated manner in the subject matter of fiqh muamalah at the Aliyah level, which is supported by learning documents such as textbooks and fiqh muamalah modules. The caregivers of muamalah fiqh subjects are not familiar with the term Sharia economics which is popular outside Islamic boarding schools, because the term is not found in the original fiqh books, which lasim is fiqh muamalah or muamalah iqtishadiyyah. In particular, the Islamic economic development policy at Islamic boarding schools has not been found in the vision and mission of Islamic boarding schools, but substantially it has been conducted for a long time through muamalah fiqh lessons, even coupled with mu'tabarah fiqh book halaqah activities outside formal learning hours.