Multifunctional sofa chair massage backrest

The utility model discloses a multifunctional massage backrest of a sofa chair, which aims to ensure that the backrest provides dispersive reverse supporting force to improve the comfort when a massage function is not used, and can receive concentrated reverse acting force provided by massage balls to ensure the massage effect when the massage function is used. A multifunctional sofa chair massage backrest comprises a machine core, rollers on two sides of the machine core are assembled with massage sofa guide rails, racks are fixed on the massage sofa guide rails and meshed with driving gears on the machine core, and an area, corresponding to the movement of massage balls of the machine core, on a backrest sleeve is a massage area. The massage chair further comprises a back cushion which can cover the massage area and provide dispersive reverse supporting force, the back cushion is connected with the backrest sleeve, and the back cushion can be removed or lifted to enable the massage area to be exposed, so th