The present invention relates to a low noise small muscle gun massager, comprising: an upper body separated into a horizontal upper portion about a central axis (O)； A lower body separated into a horizontal lower portion with respect to the central axis O； A handle portion extending downward from one side of the lower body； A body end cap for coupling and fixing the ends of the upper body and the lower body； A driving motor in which the power supply unit is built in the handle part and is fixedly installed on the lower body by being positioned above the handle part； A vibration damping plate having a horizontal surface such that the driving motor is screwed to one surface and reduces vibration of the driving motor； A crank positioned on the other side of the vibration damping plate and coupled to a drive shaft of the drive motor； The vibration damping plate is screwed to the lower body such that the predetermined height (d 2 ) is higher from the horizontal plane including the central axis (O) on the handle portion to secure the drive motor installation space, the lower body A vibration attenuation fixing part formed to have a predetermined height from the vibration damping plate to attenuate the vibration from the vibration damping plate； A vibration damping packing positioned between the vibration damping plate and the vibration damping fixing part to attenuate the vibration from the vibration damping plate； A stepped connection portion having one side coupled to an eccentric shaft of the crank through a bearing； A piston coupled to one other side of the step connection portion having a predetermined height (d 1 ) lower than the other side via a bearing； A massage member coupled to the piston； And a mounting sleeve for reducing noise generated by the linear reciprocating motion of the massage member and the piston. The mounting sleeve includes a predetermined height d 1 by the step connecting portion and a predetermined height d by the vibration damping fixing part
