The invention discloses a three-dimensional display system suitable for displaying project progress, and particularly relates to the technical field of three-dimensional display systems, comprising a GIS spatial database, a simulation database, a visual mapping module and an AVO conversion module which are connected in sequence; the GIS spatial database is connected with a multi-source construction data acquisition module and is used for acquiring progress image information of an engineering site, and spatial entities and attribute information of the engineering site are in one-to-one correspondence by utilizing an organization form of the GIS spatial database; the simulation database is established through the space entities and the attribute information in a one-to-one correspondence mode, meanwhile, a geoscience model associated with the engineering site is provided, and geographic parameters are provided for modeling. Technical support is provided for on-site construction management, practical significance is achieved for improving the modernization level of engineering design and management, limitation of construction sites, weather and manpower is avoided, display is stable, and practicability is good.