The utility model provides a supplementary induction heating of ultrasonic wave prepares device of grit instrument of brazing, include: workstation, protection chamber base, protection chamber cover, ultrasonic transducer, ultrasonic horn, cooling system, induction heating coil, infrared radiation thermometer, during the use, at first have the grit instrument base member of active binder and grit to fix the end at ultrasonic horn the coating, then let in inert gas or evacuation in protecting the chamber, the adjustment infrared radiation thermometer makes it can survey grit joining region temperature, start -up cooling system and induction heater pass through induction coil to the heating of instrument base member, to be treated to start ultrasonic transducer after active binder reaches the fusion temperature, applys the ultrasonic wave to the instrument base member, after the worker's technology of waiting to heat up is accomplished, stops the ultrasonic wave and applys, when treating the joining region thermal drop to the solid transition temperature of liquid, exert the ultrasonic wave again, treat that the joining region temperature reduces and stop the ultrasonic wave load behind active binder tempering temperature -, cool off and obtain the grit instrument after the room temperature.