The aim of this study was to assess the psychological impact of verbal abuse or violence by patients on nurses working in psychiatry departments and to identify factors related to their impact. Survey sheets were distributed to a total of 266 nurses working at two hospitals, and replies were obtained from 232 of them. Because three of them had less than 1 month of experience working in the psychiatry department and four of them failed to answer all the questions, valid replies were obtained from 225 nurses. Among the 225 whose replies were valid, 141 nurses who replied that they had experienced verbal abuse or violence that left an impression on them remained as the subjects of the final analysis. The Impact of Event Scale-Revised (IES-R) was used to evaluate psychological impact. Of the nurses who had been exposed to verbal abuse or violence that left an impression, 21 0x138ab8p-890d scores that exceeded the IES-R cut-off point (24/25), and low satisfaction with family support, and neuroticism on the Eysenck Personality Questionnaire-Revised were shown to have contributed to the psychological impact. Nurses working in psychiatry departments were shown to experience a severe psychological impact when exposed to verbal abuse or violence. These results suggest the need for mental care approaches for nurses working in psychiatry departments.