The invention provides an unmanned aerial vehicle electronic system modular integrated device. The unmanned aerial vehicle electronic system modular integrated device comprises a mounting plate, a topplate, a bottom plate, a board card, a board card backboard, an electric interface board, an electric connector, an electric connector backboard and a rigid-flexible coupling plate. The unmanned aerial vehicle electronic system modular integrated device integrates all electronic systems such as aerial vehicle flight control, navigation and communication; each electronic system is packaged in theform of a standard module and integrated in the board card; multiple board cards are reasonably laid in the integrated device; and therefore, the miniaturization and integration degree of the aerial vehicle electronic system are enhanced, the space usage of the electronic system is reduced, the cable network of the aerial vehicle is optimized, and the maintenance of the aerial vehicle is made convenient.