The invention relates to automobile parts, in particular to a self-adaptive adjusting active vibration-reducing auto seat. The seat is installed in a carriage of an automobile, and comprises a seat body, four air-pressure actuators, a magnetic actuator, a main gyroscope sensor, a main vibration accelerated speed sensor, an auxiliary gyroscope sensor, an auxiliary vibration accelerated speed sensor, four air supplying and pressure regulating devices and an electronic control unit. According to the seat, the riding comfort of the automobile and the accuracy of posture control of the seat are improved; a self-adaptive posture adjusting function of the seat is achieved by the gyroscope sensors, the electronic control unit, the air supplying and pressure regulating devices and the air-pressure actuators, an active vibration-reducing function of the seat is achieved by the vibration accelerated speed sensor, the electronic control unit and the magnetic actuator, and the two functions can work simultaneously and separately to form a whole in structure without affecting each other on functions, so that the reliability of a system is improved; the structure is compact, the stability is good, the cost is low, and motion interference is avoided.