[EN] The aim of this paper is to establish an international framework for sustainable project management in engineering, to make up the lack of research in this field, and to propose a scientific theoretical basis for the establishment of a new project management system. The article adopts literature review, mathematical programming algorithm and case study as the research method. The literature review applied the visual clustering research method and analyzed the results of 21-year research in this field. As a result, the project management system was found to have defects and deficiencies. A mathematical model was established to analyze the composition and elements of the optimized international project management system. The case study research selected large bridges for analysis and verified the superiority and practicability of the theoretical system. Thus, the goal of sustainable development of bridges was achieved. The value of this re-search lies in establishing a comprehensive international project management system model; truly integrating sustainable development with project management; providing new research frames and management models to promote the sustainable development of the construction industry.This research was funded by the Spanish Ministry of Science and Innovation, along with FEDER (Fondo Europeo de Desarrollo Regional), project grant number: PID2020-117056RB-I00.Zhou, Z.; Alcalá-González, J.; Yepes, V. (2021). Optimized Application of Sustainable Development Strategy in International Engineering Project Management. Mathematics. 9(14):1-30. https://doi.org/10.3390/math9141633S13091
