Purpose: A middle-aged crisis is a phenomenon in which an individual reaches the middle of his life and experiences emotional confusion such as the meaninglessness of life, emptiness, and helplessness, as well as doubts about the meaning of life and reality. Currently, a middle-aged man is in an important position in his career and home life, but he is facing a crisis of emotional turmoil and drifting through the middle of life. The purpose of this study was to clearly define the attributes of middle aged men’s crises through concept analysis. Methods: The concept analysis method described by Walker and Avant was used. The attributes of middle aged men’s crises, it’s critical attributes, antecedents, consequences, and empirical referents were identified. Model, borderline, and contrary cases were also proposed. In the final analysis, there were 35 articles in Korea and 22 articles in the field of 'middle-aged men crisis'. Results: The attributes of these crises were identified as aging anxiety, emotional emptiness, loss, alienation, and pressure. The antecedents were lack of social integration due to unemployment and retirement, marital discord, divorce or separation, workplace fluctuations and frustrations, hormonal changes, independence of children, aging of appearance, and child and parental support. Properties are identified by aging, emotional emptiness, loss of sense, feeling of isolation, and pressure. The consequences occurring as a results of crises in middle age were confirmed by depression, a family crisis, and overcoming crises. Conclusion: The crisis for a middle-aged man can be used as an indicator of subjective perception of his experience, this is a concept that can present a positive direction for middle-aged men to overcome the crisis. Based on the results of this study, it is necessary to develop integrated intervention among multidisciplinary interventions that can enhance the quality of life of men who are suffering from a middle-aged crisis and measurement tools that include the multi-faceted attributes of men 's middle-aged crisis. In addition, it is necessary to reflect the possible attributes of nursing intervention which is required for middle-aged men in clinical field.