Today, the role of managers in organizations and companies is so important that having a capable and quality manager is considered one of the competitive advantages. The tools that managers use to succeed are information that is often derived from their characteristics. The role of managers in competitive markets is also more intense. Therefore, the aim of this study is to evaluate the effect of management characteristics on the relationship between product market competition and management performance. The data collection method is archival and the sample consisting of 120 companies was selected during 2012-2019 and their data were analyzed using structural equation modeling. The findings suggest that as market product competitiveness and management characteristics increase, management performance improves, and management characteristics improve the positive relationship between competition and management performance Leading management traits have an impact on management ability, and in markets where the level of competition is high, the effectiveness of these traits is more evident.