<p><strong>Objectives:</strong> In this study, we compare the effectiveness of hypnosis and cognitive - behavioral therapy on reducing post-traumatic stress disorder.</p>
<p><strong>Methods: </strong>This research is done in the form of an experimental method. The research design is pre-test - post-test with a control group. The target population in this study consisted of 450 war veterans referred to Isar Hospital in Ardabil-Iran in 2019. The sample of the study consisted of 210 people who were randomly selected and answered the PTSD Checklist (PCL). Of the 90 respondents who achieved the highest score from the PCL questionnaire, 60 were randomly selected and divided into two experimental and one control group. One of the experimental groups; received 8 sessions the CBT treatment and, the other group received 8 sessions Hypnosisand and the control group continued their usual treatment. After the treatment sessions, post-test was taken from all participants. Data were analyzed by using ANCOVA in SPSS version 21.</p>
<p><strong>Results: </strong>The results showed that there is a significant difference between the Hypnosis and CBT groups (P &lt;0.01). There was also a significant difference between the control and the CBT groups as well as hypnosis (P &lt;0.01).</p>
<p><strong>Conclusions:</strong> The aftereffects of the current examination indicated that hypnosis and cognitive behavioral therapy are successful in decreasing post-traumatic stress disorder. We additionally found that hypnosis&nbsp; is more effective than CBT.</p>