At present, configuration management in operational and support stage of our military aircraft mainly depends on user own, which is short of informatization and has low efficiency, also is separated from configuration management in development and delivery stage. In this paper, we research the connotation of configuration management in operational and support stage, then propose a configuration management approach in operational and support stage based on analysis of configuration identification, configuration control, configuration status accounting, configuration audit. The proposed approach is applied to aircraft engineering, which shows high efficiency.