The invention discloses a change control method based on a BIM. The change control method based on the BIM comprises the following steps of (1) building a BIM database matched with the BIM according to importance of related attributes of an entity of the BIM; (2) carrying out reconstruction on model data in the BIM database, and generating the BIM; (3) carrying out collision detection on the BIM, timely changing the BIM according to a model collision detection result, and recording change information; (4) storing a new vision of the BIM and change records according to the change information of the BIM; (5) extracting information of the BIM to carry out change analysis; (6) carrying out change evaluation; (7) carrying out change simulation, wherein three-dimensional dynamic simulation is carried out according to the changed model and the schedule plan; (8) carrying out change update on component models which are modified and changed professionally. According to the change control method based on the BIM, change control can be carried out on the project implementation phase, change control can also be carried out on the project decision phase and the project design phase, change cost is reduced, and the construction time is reduced.