The present invention relates to an oscillating or pulsed pumping device for oral fluid pressure cleaner. This technical aspect of the present invention comprises a plurality of jidoe gear (drive gear and the idle gear) have different gear ratios which is driven by a motor, the gears of the large diameter gear (idle gear) is coupled eccentrically to the side of the induction stroke which allows to convert the rotary motion into a linear reciprocating motion of the elliptical structure derived and in that so as to spray the liquid mixture in the cylinder body to the reciprocating motion or pulsating manner. Looking at this in more detail, the present invention allows the oscillating or pulsating (second fine periodic injection) by injection with a pressure of oral cleaning and disinfection at the same time the mouth with water and sterilizing liquid (2 kinds liquid) at the same time mixed with the pump apparatus (reciprocating pump) that it can be achieved, at least the driving gear and the idle gear of the gear ratio 1: establish a second, oval piston stroke axis induced structure is horizontal: vertical diameter ratio of 1: 1 mixture of the oscillating or pulsating flow by setting more but has to be pumped were to press the second fine periodic manner, during the pumping device has a durability can be improved by the inner peripheral surface and wear resistance in combination with a separate metal plate in the slide groove of the cylinder liner and the body structure of the induction stroke so also are easy to manufacture due to the simple structure, of course, is characterized in that the post-maintenance easy. In addition, the present invention various functional effects such as by the oral cleaning and massage, sterilizing and goggle to inject pressurized by reciprocating the nozzle having a pumping cycle by mixing two or ultrafine liquid (water + sterile liquid) at a predetermined ratio The advantages which can secure and, in particular so that the reciprocatin
