Gateway safety circuit, gateway safety device and vehicle

The utility model provides a gateway safety circuit, a gateway safety device and a vehicle. The vehicle comprises an in-vehicle communication system and an out-vehicle communication system. The gateway safety circuit comprises a first communication interface, a second communication interface and a communication module. The first communication interface is used for being electrically connected with an in-vehicle communication system. The second communication interface is used for being electrically connected with an out-of-vehicle communication system. The communication module comprises an intranet domain controller and an extranet domain controller; the internal network domain controller is electrically connected with the first communication interface and used for communicating with an in-vehicle communication system, and the external network domain controller is electrically connected with the second communication interface and used for communicating with an out-vehicle communication system. Data transmissio