The invention relates to a reinforcement detailing production computation management method based on BIM (Building Information Modeling), which comprises the steps of according to construction requirements, regulating reinforcement parameters in a BIM model; extracting reinforcement information in the BIM model to establish a reinforcement database; reading reinforcement information in the reinforcement database to regenerate a BIM reinforcement model, and checking the reinforcement database; processing the checked reinforcement database and establishing a reinforcement detailing database; reading reinforcement information in the reinforcement detailing database to regenerate a BIM reinforcement model, and checking the reinforcement detailing database; producing electronic tags and writing the reinforcement information into the electronic tags; reading the reinforcement information in the electronic tags, regenerating a BIM reinforcement model, and checking the electronic tags; carrying out reinforcement production, matching the reinforcements with the corresponding electronic tags, and organizing reinforcement distribution; extracting the reinforcement information in the electronic tags, and carrying out reinforcement computation; and reading electronic tag information to examine goods, and establishing a construction site reinforcement material information base to carry out classified management on the reinforcements.