Background & Aim: Moral intelligence is one of the dimensions of intelligence that can provide a framework for the proper functioning of human beings. Anger can have a significant impact on the quality of nursing care. The aim of this study was to determine the relationship between moral intelligence and anger in the nurses of Ilam city in 2019. Methods & Materials: In a study, a group of 69 nurses working in emergency and individual departments were chosen. Data collection was done with a demographic profile form and Lanic and Kiel's moral intelligence questionnaires (2011) and Buss and Perry's aggression questionnaires (1992). Data were analysed via SPSS-22 software. A coefficient of 0.05 was implemented. Results: The average Moral Intelligence score of all the nurses was 149.04 17.90, and Average aggression score of all the nurses was 72.62 17.34. Between moral intelligence and aggression of all nurses (r=-0.33, p=0.007) and emergency ward nurses (r=-.053, p=0.0020) There was a significant inverse correlation. Conclusion Considering nurses 'day-to-day confrontation with work-related problems, it is necessary to pay attention to moral intelligence and its relationship with anger. Inclusion of the necessary training on the relationship between moral intelligence and anger management are suggested in nursing and nursing student curricula.