Abstract: Aiming at the problems of low coordination efficiency and insufficient visualization in the deepening design stage of traditional two-dimensional drawings, this paper probes into the applicability and standardized application process of BIM technology in the deepening design of civil engineering. By combing the sub-items of deepening design in civil engineering, the key points of deepening design of each sub-item are summarized. Combined with BIM application in each deepening design sub-item, the applicable direction of BIM technology is determined. By combining with the actual project, the functions and usage scenarios of the BIM deepening software with high adaptability to the project requirements are systematically sorted out. Taking special projects of foundation pit and rigid structure as examples, this paper constructs an intelligent application scheme driven by BIM technology, and confirms the application value of relying on BIM technology to deepen the quality and efficiency improvement of design work. This paper provides theoretical support and practical path for the standardized application of BIM technology in civil engineering deepening design.