One of the most important missions of the Imams of Athar (AS) is to propagate the religion based on the expression of jurisprudence required by the Islamic society. From this point of view, Imam Sadiq (a.s.) had the most field and activity in this field among the Imams of Athar (a.s.), due to the political and social conditions of his time. With this description, knowing the preaching strategies of Imam Sadiq (AS) in the section of expressing religious and jurisprudential rulings is the main problem of the present research, which is tried to be answered by examining the preaching and scientific life of Imam Sadiq (AS). The importance of examining the question of this research, which is based on religious sources, is undoubtedly one of the requirements of the field of preaching, and such studies indicate the correct way of preaching religion and jurisprudence in the society. The research results show that the preaching strategies of Imam Sadiq (a.s.) are a diverse set, including the correct transmission of jurisprudential traditions, writing in jurisprudence, the way of presenting jurisprudential traditions, the way of spelling, promoting ijtihad and fighting analogies, and using the debate strategy to promote and propagate in the field of expression. jurisprudence and the rules of religion. He always paid attention to the level of intellect and talent of his students and audience and presented his jurisprudential and preaching content according to their understanding. In addition to this, the strategy of writing letters and scientific correspondence