Present research intends to investigate the effectiveness of imagery rescripting and reprocessing therapy (IRRT) on insomnia, nightmare and suicidal ideation in depressed persons with suicide attempt history. The study population includes 45 persons who had referred to RashtRazi Hospital during 2 months. These persons answered the Beck Depression Inventory(BDI-II) as screening instrument.40 of them were depressed. These persons answered the Insomnia Severity Index(ISI),Disturbing Dreams and Nightmare Index(DDNSI) and Beck Scale for suicide Ideation(BSSI).30 of them who had the highest scores of insomnia, nightmare and suicide ideation, were selected. Then they were randomly assigned to experimental and control groups. For each of 15 persons of experimental group, IRRT was carried out weekly(7 sessions).Then both groups answered the ISI,DDNSI and BSSI inventories With use of MANCOVA by SPSS 18. The findings indicated that Imagery Rescripting and Reprocessing Therapy(IRRT) decreased measure of insomnia, measure of nightmare and measure of suicide ideation on suicide attempters. Also there were statistically significant differences between corresponding measures in experimental and control groups. These results suggest that IRRT can be useful to successfully reduce insomnia, nightmare and suicide ideation. Associated with depressed persons with suicide attempt history.