The purpose of this study is to find out and explain the mechanism for stopping investigations in the settlement of criminal acts by prioritizing Restorative Justice and to find out or explain the implementation of stopping investigations based on restorative justice in the Aceh Regional Police. This article uses an empirical legal research approach (applied law research) by looking at how the implementation occurs in the field, namely seeing how a case that has begun its investigation must end at the investigation level based on Police Regulation No. 8 of 2021 concerning Termination of Investigation based on Restorative Justice. The results of the study found that the mechanism used was to call the litigants for mediation before the case was transferred to the public prosecutor stage with the condition that it must meet material requirements, namely not causing unrest and rejection from the community, not having an impact on social conflict, not having the potential to divide. nation, not radicalism or separatism, and not the use of a criminal act then the parties who are experts agree to make peace in which the perpetrator is obliged to fulfill the rights of the victim referred to here is to return goods, compensate for losses, replace costs incurred from as a result of a criminal act and to replace the damage caused by a criminal act and on the basis of this peace, this is the basis for stopping the investigation based on restorative justice and its implementation in the field has shown a change in the settlement of cases and the concept of r estorative is effective in handling a case without causing turmoil in society.