Signal processing circuit board card, domain controller and vehicle

The utility model relates to a signal processing circuit board card, a domain controller and a vehicle. According to the signal processing circuit board card, common devices of each board are extracted to be designed into a universal bottom board by adopting a form of a universal bottom board and a function daughter card according to parameters such as signal types and driving current magnitudes of parts, and the function daughter card is designed into several kinds of module daughter cards according to driving types and acquisition signal types used by the parts. And flexible replacement is realized according to different use scenes. Therefore, the universality and the expandability of the board card can be improved, the area of a single board is reduced, the hardware development period is shortened, and the cost is reduced.