The present invention is a handpiece body through which the inlet pipe and the outlet pipe are passed therein； A cavity portion formed with an inlet and outlet through which the inlet pipe and the outlet pipe are connected to each other and coupled to the front end of the handpiece body； A thermoelectric element provided on the outer surface of the cavity and performing a heating or cooling operation by receiving an electric signal； A ceramic positioned above the thermoelectric element, coupled to the cavity, and having an accommodation space formed therein； An ultrasonic vibrator seated in the receiving space of the ceramic and receiving an electrical signal to generate ultrasonic waves； A conductor that covers the receiving space of the ceramic on which the ultrasonic vibrator is seated to protect the ultrasonic vibrator, and is in contact with the thermoelectric element to transmit heat or cold heat of the thermoelectric element to the ceramic； And a holder that connects the ceramic to the handpiece body and surrounds and protects the outside of the cavity part. According to the present invention, it is possible to improve the heating function and cooling function by cooling and heating using a thermoelectric element, radiating the thermoelectric element by water cooling, and efficiently transferring the cold or heat generated from the thermoelectric element to the ceramic using a conductor. In addition, the frequency conversion and pulse width conversion in the range of 1MHz to 10MHz have the effect of enabling various and efficient ultrasonic treatment. In addition, the heating function, the cooling function, and the ultrasonic function can be used alone or in combination as needed, thereby enabling universal use.본 발명은 내부에 입수관과 출수관이 통과되는 핸드피스 본체； 상기 입수관과 출수관이 연결되는 입수구와 출수구가 형성되어 상기 핸드피스 본체의 선단에 결합되는 캐비티부； 상기 캐비티부의 외면에 구비되고, 전기적인 신호를 받아 온열 또는 냉각 동작을 수행하는 열전소자； 상기 열전소자의 상부에 위치하여 상기 캐비티부에 결합되며, 내부에 수용공간이 형성되는 도자； 상기 도자의 수용공간에 안착되고, 전기적인 신호를 받아 초음파를 생성하는 초음파진동자； 상기
