One of the most important stages in the criminal process is the implementation of the sentences, and therefore, in order to better enforce the penalties, the existence of an independent judiciary in the execution of the sentence is necessary and necessary. Based on this, the many deficiencies in prisons and the attention given to the objectives of the reconciliation of the convicts have led to various measures to reduce the presence of prisoners in prison, in which the "enforcement officer" in the execution stage and even after the execution of the sentence has duties and powers be. The prediction of this institution in the criminal system indicates that the involvement and presence of criminal justice activists after the issuance of a conviction is necessary and the enforcement of sentences is not only the executor of the penalty, and his duty is not limited to the execution of the punishment. Rather, as his name suggests, this official, along with social workers and psychologists and sociologists who, under his supervision, are engaged in punishment, or, in other words, try to comply with the rules of the morale and character of the perpetrators and convicts It does. The enforcement authority has entered the criminal system with the aim of punishing individual punishments and has duties and powers in the context of the suspension, conditional release, and semi-liberties. The present article seeks to address the comparative study with emphasis on the institutions that impose temporary and conditional detention of prisoners. In this context, attempts are made to investigate short-circuited institutions. It seems that the granting of judiciary duties to judges of execution of judgments in some of these institutions has facilitated the fulfillment of their intended goals, but in others, reference to the permissions of the issuance of judges is an obstacle to playing a judicial role in the enforcement of sentences in Iran.