This study was conducted as pre-test and post-test experimental design with the control group in order to identify the effect of psychoeducation on anger management and problem solving skills of the patients with post-traumatic stress disorder. This study was carried out in Gülhane Military Medical Academy, the department of Military Psychology and Battle Psychiatry between May 2012 and May 2013. The study sample included 22 control and 22 intervention group patients with PTSD who admitted to participate in the study and who were asked to receive the drug treatment by staying in the clinic. Psychoeducation was only performed on the intervention group. In the collection of research data, “Sociodemographical Information Form”, “Trait-Trait Anger Expression Inventory”, “Problem Solving Inventory” and “The Impact of Event Scale” were used. Data were assessed by Repeated Measures Variance Analysis via SPSS (15.0). Problem solving skills of the patients who had high-school and up to the level of high-school education were identified to be more insufficient than the ones having undergraduate and graduate educations. Before receiving psychoeducation, it was identified that the levels of trait anger of the patients were high, and that they perceived themselves as mild insufficient individuals in problem solving skills. It was identified that trait anger increased the anger control and problem-solving skills while it decreased inward and outward anger levels in the intervention group of psychoeducation. As a consequence, it has been recommended that the continuity of psychoeducations the psychiatry nurses applied have been provide in psychiatry clinic.