In some possible implementation solutions, a plurality of intelligent multimedia playback devices 250 of different types play same multimedia content. For example, a smart television is playing a video corresponding to the multimedia content, and a smart speaker is playing an audio corresponding to the multimedia content. In this case, the plurality of intelligent multimedia playback devices 250 are displayed in one playback control card. As shown in FIG. 6S, the television 111 in the first room and the speaker 113 in the first room are playing same multimedia content, and a playback control card 669 is displayed in a SmartCare interface 369. In some possible implementation solutions, the playback control card 669 optionally includes a volume display bar corresponding to each intelligent multimedia playback device 250, so that a user input can be received to adjust volume of each intelligent multimedia playback device 250.