Abstract
    this regard, various measures have been taken by the different societies that have pursued specific objectives such as punishment, deterrence, compensation, etc. These measures include reforming, rehabilitating, and resocializing the criminals. This issue has a history of only more than two centuries in the Western world, but there are many propositions in Islamic texts. However, the basics of the reformation of criminals have been less comprehensively investigated, especially from the perspective of Islamic jurisprudence. This article aims to analyze the fundamentals of Islamic jurisprudence on reforming criminals with a descriptive-analytical method. The findings of the research show that, in addition to the numerous verses of the holy  Qur'an, in the manner of the imams (S.A), especially the governmental life of the Prophet (S.A)  and Imam Ali (S.A), attention to this matter is seen. In addition, the reformation of criminals is also subject to the proof of the “preventing of evil”. Even if these jurisprudential evidences are ignored, the need to avoid the harmful consequences of not reforming the criminals, demands that we put the expediency in accepting these measures.