A massager has a base, a U shaped housing mounted on the base, a motor received in the housing and having a worm shaft extending out of the motor, a transmission assembly encased in the housing and including a transmission axle, a worm gear, two wobbling wheels mounted on the transmission axle and two kneading plates mounted on the transmission axle and a rubbing assembly having two disks respectively mounted on a free end of each of two driven axles and having two rubbing balls formed on a face of each of the disks.