An electromagnetic massage device for bathtub or pool includes an integrated holder for being fixed in a mounting hole； a lock nut engaging a thread on a wall on the holder, that fastens the holder to the surface of the wall； a rubber case with a top portion that bulges outward and a bottom portion with a rim which fits to the base plate of the concave cavity of the holder to seal the opening of the upper end of the holder； a conductive coil provided in the ring cavity of the holder and encapsulated by an upper magnetic conductive cover, a lower magnetic conductive cover and a magnetic conductive shell； and a beating head and an armature fastened together and mounted in the guide cavity of the holder to slide in the guide cavity under the action of an electromagnetic field.
