In order to the necessary about militarization information integrated combat platform, modeling the concept of equipment maintenance and support operations. Use case descriptions on the basis of analyzing the process and characteristics of the equipment maintenance operations, building equipment maintenance and support activities model. Elaborate collaborative relationship and interaction mechanism between the maintenance and support action model, building the main collaborative model; given maintenance and support operations flow and actors of dynamic correlation, maintenance and support operations timing model is establish. The results show that the model reflects the interaction and internal logic between the maintenance task, entity, action-object.