In the Correctional Institution (Lapas), there are problems that have not been resolved, such as the repeated riots that have occurred in prisons in Indonesia, over capacity increasing (source: smslap.ditjenpas.go.id) and the death rate of prisoners due to suicide. One of the causes of this phenomenon is mental health problems. Based on preliminary data collection on 100 new prisoners, it shows that 40% indicated paranoid disorders. This was experienced because of the fear and trauma felt by the prisoners who had just entered the Penitentiary. The emergence of this paranoid disorder has a negative impact on prisoners and prisons because it can cause suspicion, prejudice, both against fellow prisoners and correctional officers and people around them, which can lead to prison riots. Thus, it is necessary to have countermeasures or treatment that can reduce the level of paranoia felt by inmates. The Rational Emotive Behavior Therapy (REBT) with patronage technique counseling model can be a suitable counseling model considering that this approach is a cognitive behavior that emphasizes the connection with feelings, behavior and thoughts, one of which is obtained through social learning. In this study, the analysis was carried out using quantitative approaches (descriptive and inferential analysis of numbers) and qualitative (thematic descriptions and analysis of text or images). The data analysis technique is comparative analysis. For comparative or experimental research, if only two variables are being compared, then the t-test is more appropriate, taking into account the size of the data and the nature of the relationship between the variables. The statistical hypothesis test uses different test Paired Samples T-test because the sample is paired between pre-test and post-test data. The data collected was processed with the SPSS for Windows application program package. Based on the data, it was found that REBT's Treatment Counseling with patronage technique could significantly reduce the level of paranoid inmates. Based on the interview data obtained, the respondents felt more relieved/calmer and could have a more openminded-realistic mind after REBT counseling was carried out in the orientation admission program. However, in this study there are still many influences that cannot be controlled by the researcher such as adaptability, personal factors, environmental factors (residential blocks and friendship) and family visiting/support factors.