Special back rubbing device and use method thereof

The invention discloses a special back rubbing device and a use method thereof, and relates to the technical field of back rubbing devices. The device comprises two fixed plates, a carrying plate, a rotating assembly, two protective covers and a brush; the fixed plates are fixed on the wall of a bathroom through bolts; a T-shaped sliding groove is formed in the front surface of each fixed plate; arack is fixedly installed on one side, close to each T-shaped sliding groove, of the front surface of each fixed plate; each rack is located on the outer side of each T-shaped sliding groove; two T-shaped sliding blocks are fixedly installed on the two sides of the rear surface of the carrying plate; the T-shaped sliding blocks are located in the T-shaped sliding grooves; and the T-shaped slidingblocks are in sliding fit with the T-shaped sliding grooves. Through the meshing connection of first gears and the racks, the carrying plate can drive a frictional crawler belt to move up and down; by the meshing connection o