The electronic information system is composed of a variety of subsystems, and its normal working state has an important impact on its function. For a long time, there are four main problems in the status monitoring and management of this type of vehicle-mounted electronic information system. Therefore, a condition monitoring and alarm system based on wireless sensor network was developed, aiming at the main problems. This system realizes the real-time realization of system state information collection, and the intelligent level of maintenance management work is improved.