Аннотация:The management of project complexity has become an important part in the project management, being critical to the success of the large complex project. According to literature review and questionnaire survey, the Analytical Network Process (ANP) method is used to measure the influencing factors of project complexity and Super Decisions (SD) software is used to calculate weights of influencing factors, so as to identify the key influencing factors to manage projects better. Results found that cross-organizational interdependence, multiple stakeholders, number of organizational structure hierarchy, project team's trust and diversity of technology are the five key factors which have the biggest influence on the project complexity. This research provides the scientific support for the practice of project management, which has theory direction significance for mega and complex project management.
