This study describes the da'wah method of Sheikh Muhammad Yasin al Fadani in Mecca in the 20th century AD. Sheikh Muhammad Yasin al-Fadani is one of the scholars in Mecca who came from Indonesia. He is known as the musnid dunya; a scientific sanad expert who is influential because of his expertise. Therefore, this study aims to reveal the contribution of Sheikh Yasin al-Fadani's da'wah in Mecca in the 20th century AD. The research method uses a literature review to analyze Sheikh Yasin al-Fadani's book and books related to this study to obtain data. The results of this study explain that Sheikh Muhammad Yasin al-Fadani contributed to the da'wah of Islam in Mecca through ta'lim (teaching), takwin rijal (ulama cadring), and taklif (literacy/authorship