Modern Economics & Management Forum

This study focuses on the impact mechanism of project managers' decisions on project success, and builds a comprehensive analysis framework based on existing theories and literature. Through in-depth discussion of the key factors in the decision-making process of project managers (such as information collection, risk preference and team collaboration), this paper analyzes how they affect project success through three dimensions: cost, time and quality. The research points out that the rationality of project managers' decisions not only depends on their professional knowledge and experience, but also is significantly affected by organizational culture and external environment. Through theoretical analysis, this study reveals the internal relationship between project managers' decisions and project success, provides theoretical guidance for project management practice, and lays a foundation for subsequent empirical research.