The present invention relates to an oral cleaner having a hydraulic adjustment, a variable that easily change the resistance value using a resistor lever by adjusting the number of revolutions of the motor which is driven by a change in resistance value according to the operation by adjusting the pressure of the water freely selected speed (flow rate) to be pumped and to be used. Oral cleaner according to the present invention for achieving this, the water in the scrubber water bottle 20 to be removable separately from the cleaner main body 10 is set to a predetermined pressure adjusted by the driving of the cleaner main body 10 inside the pump motor (30) As the injection through the injection nozzle 42 of the cleaning injector 40 into the reciprocating motion of the pressure piston 36 in constituting the oral cleaner for removing foreign substances in the oral cavity, the pump motor 30 driving the piston body 32 Installation equipped with a lever holder 60, the through hole coupling the lever 14 of the control operation of the signal the control panel electrically connected to the signal for the variable resistor 80, 70 is the cleaner main body 10 as a medium, and the fixed guide 54 is mediated by the rotation knob 52, the control terminal of the variable hydraulic rotary lever coupling sphere adjustment lever thereby rotating the operation 72, 50, the lever holder 60 of the variable resistor 70 ( 62) is bound to the installation, the variable resistor 70 has a technical feature to signal the control panel 80 and electrically connected to the configuration signal relationship.본 발명은 수압 조절기능을 갖는 구강세정기에 관한 것으로, 저항값을 용이하게 바꿀수 있는 가변저항기를 이용하여 레버 조작에 따른 저항값의 변화를 통해 구동되는 모터의 회전수를 조절함으로서 펌핑되는 물의 속도(유속)인 수압을 자유롭게 선택 조절하여 사용할 수 있도록 한다. 이를 달성하기 위한 본 발명에 따른 구강세정기는 세정기본체(10)에 별도로 탈부착되는 세정기물통(20)의 물이 일정 압력으로 설정 조절되어 세정기본체(10) 내부의 펌핑모터(30)의 구동에 의한 압력피스톤(36)의 왕복운동으로 세정분사기(40)의 분사노즐(42)을 통해 분사되면서 구강 내의 이물질을 제거하는 구강세정기를 구성함에 있어서,피스톤구동체(32)의 펌핑모터(30)를 제어 동작시키는 신호제어판(80)에 대해 전기적으로 신호 연