The invention discloses an intelligent identification and auxiliary compilation system for a regional power grid maintenance plan, and belongs to the technical field of electric power maintenance. Thesystem comprises an advanced application layer, a service support layer, a basic management layer and a data storage layer which are in information interconnection in sequence, wherein the basic management layer comprises an overhaul database, an overhaul knowledge base, a network communication module, a process management module, an authority management module, a graphic conversion module, a model conversion module and a visual interaction module, the service support layer comprises an online network modeling module, a state estimation processing module, a custom expert system and an integrated optimization algorithm, the advanced application layer comprises an overhaul plan optimization auxiliary decision module and a network publishing and query statistics module, an overhaul plan is input into the basic management layer through the visual interaction module, and a result is output through the advanced application layer after being optimized and identified by the service support layer. According to the invention, the rationality of equipment maintenance plan arrangement can be effectively improved, repeated power failure is avoided, and the equipment utilization rate is improved.