Abstract: To achieve the optimal benefits in subway vehicle maintenance and operation, this paper proposes a group maintenance control strategy for multi-component systems under the bidding game model. When formulating the preventive maintenance plan of subway vehicles, the operation department expects the vehicle to obtain a higher on-line rate, and the maintenance department expects to reduce the maintenance cost of components. At the same time, the total cost of maintenance is expected to be lower. According to the benefit demands of maintenance and operation departments, based on the current multi-level maintenance mechanism, a two-level maintenance strategy is introduced, and the maintenance cost model and availability model are established. Taking reliability as the bidding object, a rotation bidding game model is established to meet the economic benefit balance between the two. Based on the group maintenance model, the benefit demand of operation and maintenance department is further explored from a system-level perspective. The results of the example show that the department with the right to terminate the game decision has more pricing advantages in the maintenance decision, and the group maintenance model has obvious comprehensive economic benefits.