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Aiming at the problems of the weak whole process comprehensive monitoring-analyzing ability and the low fault diagnosis redundancy in the electromechanical management source monitoring system of a certain type of aircraft, a new electromechanical management source monitoring system is designed. The system uses a serial communication board on the industrial computer to connect hardware with an electromechanical management computer through the RS422A bus, the monitoring program interface is developed based on LabVIEW software. In the program design, the producer-consumer cycle architecture is used to collect and deal with data, and the problem of data packet loss is solved, the button event is used to send monitoring data of source parameters to waveform for whole process of display and analysis, fault diagnosis makes use of fault state data and waveform data synthetically to improve reliability of the fault monitoring. Through the experimental test, the power monitoring system can effectively complete the whole process parameters monitoring and analyzing, and can make the fault diagnosis accurately and reliably.