Compared with the traditional cast-in-place frame structure, the construction of the prefabricated steel joints concrete frame structure is faster, but there is a sudden change of stress at the joints of the new frame steel joints, so it is necessary to adopt the digital twin method to monitor the construction process of the actual engineering structure to obtain the influence of steel joints on the structural performance. Based on building information modeling (BIM), finite element, and sensor technologies, an intelligent building framework of the new type of prefabricated concrete frame structure with a steel connector based on digital twin was established in this study. An intelligent construction method based on digital twin was proposed in terms of physical data collection, virtual model establishment and model information interaction. In the engineering intelligent construction stage, real-time monitoring of data of the new prefabricated concrete frame with steel connector was realized via sensor technology, and sensor data was compared with BIM and finite element data. The frame structure stress in the physical model would be further adjusted and modified. Finally, the digital twin model of the prefabricated concrete frame with a steel connector was established and applied. The results show that the digital dual model can effectively monitor prefabricated concrete frame with steel connectors in real-time, predict the hazard position based on sensor network and spatiotemporal parameter analysis, reduce the resource consumption, and provide sufficient data information for subsequent applications.