The utility model discloses a quick conversion structure of a multimedia spatial decoration background partition. The quick conversion structure comprises a framework bearing (2), a limiting rotation shaft (7), the multimedia background partition (4), a fixed iron disk (5) and partition frameworks (6). The framework bearing (2) is connected with the fixed iron disk (5) and the limiting rotation shaft (7) is installed into the framework bearing (2). Partition framework connecting ends (61) enabling connection to be convenient are arranged on the limiting rotation shaft (7). The partition frameworks (6) are connected through the partition framework connecting ends (61) on the limiting rotation shaft (7) to form a firm plane framework. The multimedia background partition (4) is connected with the limiting rotation shaft (7) through the plane framework and the multimedia background partition (4) can rotate through the limiting rotation shaft (7) so as to realize rotation and background replacement of the background partition. The quick conversion structure of the multimedia spatial decoration background partition has the advantages that a background can be replaced quickly according to needs, installation is convenient, decorativeness and flexibility of a background wall can be enhanced and an indoor space can be better decorated.