The invention discloses a dual-12-pulse dual-flow brushless generator. The dual-12-pulse dual-flow brushless generator mainly comprises a base, a DC generator stator, a DC generator rotor, a rotatingshaft, an alternating-current generator stator, an alternating-current generator rotor, an end cover, an exciter stator, an exciter rotor, a bearing, a rotary rectifier and the control system. The DCgenerator rotor, the alternating-current generator rotor, the bearing and the exciter rotor are fixedly installed on the rotating shaft in the base cavity in order from front to back, the DC generatorstator, the alternating-current generator stator, the end cover and the exciter stator are fixedly arranged in the base in order from front to back, the groove of the inner circle of the DC generatorstator is internally uniformly embedded with 4 sets of 3-phase windings, wherein the phase angles of the two sets of windings are 0-degree electric angle, the phase angles of the other two sets of windings are 30-degree electric angle, and the four sets of windings are output and then form four sets of direct currents through the rectifier to output. The dual-12-pulse dual-flow brushless generator is simple in structure and flexible in power supply feature, and has no interference of an excitation source and stable performances.