Full-function DC anti-surge circuit and device

The utility model discloses a full-function DC anti-surge circuit and device, which belongs to the technical field of power supply control, is connected between a DC input end and a DC output end of a DC power supply, and comprises a peak suppression circuit, an overvoltage control circuit and a boost control circuit which are connected in sequence, a voltage detection circuit is connected between the peak suppression circuit and the overvoltage control circuit; and the main control unit is respectively connected with the voltage detection circuit, the overvoltage control circuit and the boost control circuit. The transient voltage suppression circuit is connected to the power supply voltage input end of the electronic module, and carries out suppression processing on the transient voltage of an input power supply in a targeted manner, so that the anti-interference capability of the vehicle-mounted electronic module is improved, and the vehicle-mounted electronic module is stabilized in a normal voltage range