A waterproof hand-held electric breast massager includes a casing, a driving motor, a power supply element and a massaging member. The sealing cover is disposed at one end of the tubal body and at least one a protrusion at another end of the tubal body. The bottom body further has a conductive sheet, and at least one a positioning slot around a hollow portion of the bottom body. When the positioning slot of the bottom body is aligned with the protrusion, the bottom body can be inserted into the tubal body. The driving motor is mounted in the tubal body, and the driving motor has a first and a second conductive parts. The first conductive part and the conductive sheet make contact with each other. The massaging member has a bowl-like shape and a lip with an elastic curved surface at a circumference edge such that the casing is disposed perpendicular with the lip of the massaging member.