Background: . The present study was conducted in order to identify the psychological motivators of bystanders to help in traffic accidents. Methods: This qualitative study is part of a larger study, a doctoral dissertation of nursing, with the approach of conventional content analysis in Iran in 2022. Data collection was done through semi-structured interviews with 15 male and female participants. The purposeful and theoretical sampling method, and the qualitative content analysis approach, constant comparison recommended by Corbin and Strauss 2015, were used to code the data, and determine subcategories and categories. MAXQDA 2020 software was used to assist in data analysis. Results: Six concepts of feeling of responsibility, spiritual beliefs, feeling of pity, Self-sacrificing, prevention of guilty conscience, the feeling of becoming a hero were identified as the subcategory of psychological motivators and the most important psychological motivators in the bystanders. Conclusion: bystanders will not help until they feel responsible. A feeling of responsibility can cause bystanders to Self-sacrificing help to prevention of guilty conscience. Having spiritual beliefs, feeling of responsibility and sense of heroism can increase the feeling of responsibility and motivation of bystanders to help.