The invention discloses a household hand-holding back rubbing device. The device comprises an installing housing, two tracks are symmetrically and fixedly installed on the inner side wall of the installing housing, each of the two sliding rails is internally and slidably connected with a sliding seat, a first rack and a second which have opposite rack tooth directions are symmetrically welded to the two sliding seats, the first and second racks mesh with a transmission gear, a transmission seat is welded to the side wall of the sliding seat where the first rack is located, a sliding groove isformed in the surface of the transmission seat, a transmission shaft is slidably connected with the interior of the sliding groove, a waterproof motor is fixedly installed on the inner side wall of the other side of the installing housing, and a rotary disc is welded to the end of an output rod of the waterproof motor. By means of the back rubbing device, soap of shower gel can be spread on the back when a user takes a bath, repeated rubbing can be conducted on the back, the spreading area is larger, the spreading is more uniform, the wash of the back is cleaner, the operation is strength saving and convenient, and the experience is better.