For example, the first device is a mobile phone, and the second device is a smart television. The mobile phone first receives first playback information sent by the smart television, where the first playback information corresponds to a television program played by the smart television, and the mobile phone and the smart television are connected to a same WLAN. The mobile phone displays a first playback control card corresponding to the television program that is being played by the smart television, where the first playback control card includes a playback resume option, a playback option, and a playback pause option, and the playback option and the playback pause option may be used to control the television program that is being played by the smart television. The mobile phone may display the playback control card when the mobile phone lights up during screen-off, or may display the playback control card in a control center interface when receiving an operation gesture of a user. When the mobile phone responds to the user input that a user taps the playback resume option, the mobile phone obtains content of the television program based on a URL address or a multimedia content identifier in the first playback information, and resumes playing the television program based on a video playback progress in the first playback information. According to this design, playback of the multimedia content played on the second device can be resumed on the first device, and therefore user experience can be improved.