The regular repair method is based on the actual use of vertical roller mill, with reference to the relevant maintenance cycle, the planned date of the repair work of vertical roller mill and the approximate repair workload. This method is good for preparing for repairs.

Post-inspection repair method This method prescribes the inspection plan for vertical roller mill, and determines the repair date and contents based on the inspection results and previous repair data. This method is simple and easy, but poor mastery can affect the preparation before repair.

Part of the repair method is characterized in that the components of vertical roller mill are not repaired at the same time, but are repaired separately according to the separate parts of vertical roller mill, and only a part of them are repaired at a time.