Microsatellite CAN bus testing device with anti-interference function and application method

The invention discloses a microsatellite CAN bus testing device with an anti-interference function and an application method. The microsatellite CAN bus testing device comprises an internal and external CAN testing interface and a ground CAN testing network; the internal and external CAN testing interface comprises a T-shaped cable and a CAN isolation transponder; the CAN isolation transponder is connected between a satellite-borne computer of a satellite CAN bus network and double CAN interfaces of satellite catalogue CAN equipment through the T-shaped cable; and the ground CAN testing network comprises a three-section type ground test cable, an external direct-current power supply and a plurality of ground test devices, and the ground test devices are connected with the CAN isolation transponder through the three-section type ground test cable. According to the microsatellite CAN bus testing device with the anti-interference function and the application method of the invention, the convenience and stability