As the maintenance of large scale electronic equipment is very difficult for the higher joining threshold, longer repairing time, and lower efficiency,it is a practical problem that users encounter frequently. A set of theoretical bases and implementation methods of standardization maintenance for batch large scale equipment is put forward,and the maintenance processes for these electronic equipment are explained in detail. The construction methods of the hierarchical database and the fault case database for this electronic equipment are discussed,and the standardization maintenance procedures for large scale electronic equipment are introduced. The off line test maintenance platform for their fault components and component sets is designed, so to solve these problems.