As awareness increases about the rapid deterioration of the natural environment, public concerns about organizational environmental reputations have been growing. However, current studies exploring the antecedents of organizations' environmental reputation primarily focus on environmental disclosures, green policies, and CSR practices; little research focuses on CEO's psychological states or thinking modes. Based on upper echelons theory and the attention-based view, this study explores the effect of CEO bottom-line mentality on organizational environmental reputation and the moderating role of financial performance. Data were collected from 118 CEOs, 118 CFOs, 118 CHOs, and their employees at three time points. Results indicated that CEO bottom-line mentality negatively influences organizational environmental reputation by negatively influencing the implementation of Green HRM. The company's financial performance moderated the relationship between CEO bottom-line mentality and Green HRM, and the mediating effect of Green HRM on the relationship between CEO bottom-line mentality and organizational environmental reputation. Theoretical implications and practical implications are also discussed in this paper.