Objective : This study is to know how the internal and external control of the elderly in care facilities affect the relational aggression's perception. Methods : I analyzed the internal and external control and the relational aggression‘s perception through a survey of the elderly in care facilities. For data collection, 148 of 165 questionnaires, excluding 17 questionnaires with missing questionnaire and middle-level abandonment, were used for the final analysis. Independent variables were the internal and external control, dependent variables were the relational aggression of negative and bullying behaviors, and controlled variables were general sociological characteristics of the elderly. Results : The results were as follows: First, there was a significant difference internal and external control depending on the length of a care facility. Second, there were significant differences in the recognition of relational aggression depending on the level of education, the period of admission, the presence of spouses, and the level of economy. Third, there was a significant difference in comparison of relational aggression perceptions according to internal and external control. Fourth, internal and external control affected the recognition of relational aggression. Conclusion : According to the demographic characteristics, there was a difference in the internal and external control and relational aggression perception of the elderly living in the facilities, and the internal and external control affected the level of relational aggression perception of the elderly in the facilities.