Multifunctional wall-mounted background wall

The invention discloses a multifunctional wall-mounted background wall. The multifunctional wall-mounted background wall comprises a housing, wherein a plurality of hanging holes are formed in the endface, attached to a wall body, of the housing; the hanging holes are formed along the outer edge of the housing and connected with the wall body through bolts; an opening is formed in the end face, away from the wall body, of the housing; a cavity communicating with the opening is formed in the housing; a mounting frame is arranged in the cavity; and a plurality of parallel rotating rollers are arranged on the mounting frame. The multifunctional wall-mounted background wall further comprises projection cloth wound around the rotating rollers, wherein a projection face facing the opening and astandby face facing the wall body are formed on the projection cloth; a plurality of cleaning rollers are further arranged on the mounting frame; the cleaning rollers are sleeved with cleaning sponges; and the cleaning sponge