A vehicle body network controller limping control system comprises a main control chip and an MCU failure detection unit. The MCU failure detection unit is in signal connection with the main control chip. The control system further comprises a limping return home control unit which comprises an outside switch signal receiving end and a limping control signal input end, and the main control chip comprises a dog feeding signal output end. The MCU failure control unit comprises a limping control signal output end and a dog feeding signal input end. The limping control signal output end is connected with the limping control signal input end, and the dog feeding signal input end is connected with the dog feeding signal output end. The limping return home control unit and the signal output end of the main control chip are both connected with the signal input end of a priority processing unit, and the signal output end of the priority processing unit is connected with the signal input end ofa driving module. According to the design, the vehicle body network controller limping control system has a signal priority judging function, and thus a driving error happening on the driving module can be avoided.