A method for synchronized playback of wireless audio and video is applicable to a playback system. The method for synchronized playback includes steps of receiving and processing multimedia data by the playback system, in which the multimedia data includes video data and audio data; wirelessly transmitting the audio data to a loudspeaker and meanwhile holding the video data for a threshold time; and finishing the transmission of the audio data when the threshold time is reached, so that the video data and the corresponding audio data are synchronously played. The method for synchronized playback can control the delay caused by the wireless audio transmission, thus achieving the objective of synchronously playing the audio and video data.