Abstract: In order to promote the application of digital twin technology for improving the construction process of building projects, this paper summarizes the academic research papers of digital twin technology in the field of construction engineering domestically and abroad through literature statistical analysis, bibliometric, literature content analysis, etc. It is found that digital twin technology is involved in the whole life cycle of construction projects: as to the design stage, digital twin technology is widely used in planning, conceptual design, detailed design, documentation design and simulation, etc.; In construction phase, its application is concentrated on construction process supervision, quality and safety control, personnel and machine management, etc.; At the stage of operation and maintenance, digital twins technology focuses on equipment and facility management, maintenance management, operation and maintenance monitoring, energy consumption monitoring, structural safety monitoring and others. However, most of the current works are still in the primary use stage of digital twin such as model display and data visualization. Twin information model, digital twins platform and integration of digital twin technology and construction engineering management model will become hot issues for the following researches.