Process approval method based on building information model (BIM)

The present invention belongs to the technical field of construction systems, and in particular relates to a process approval method based on a building information model (BIM). The approval process transfer part is used for determining whether the approval flowchart is the hybrid transfer mode, determining whether the approval flowchart is the serial transfer mode, and determining whether the approval flowchart is the parallel transfer mode. The method provided by the present invention solves that in the approval transfer process, one phenomenon is that under the condition of the transfer without affecting each other, when a parallel branch of the process is completed, the next node of the process can be normally reached; and the other phenomenon is that when all parallel branches of the process are completed, the next node of the process can be normally reached, so that an integrated functional information system that separately processes two different branch structures should be enabled, and beneficial tec