A method for transmitting a media stream in a video conference. The method includes, receiving a first media stream sent by a conference server, where the first media stream includes video and audio information of all conference participants in the video conference, receiving a select instruction, where the select instruction is selecting, from the video and audio information of all the conference participants, a conference participant corresponding to required video and audio information, sending a transmission request message to the conference server according to the select instruction by using a web real-time communication (WebRTC) application, where the transmission request message includes identification information of the selected conference participant, and receiving a second media stream that is sent by the conference server according to the identification information, where the second media stream includes the video and audio information of the selected conference participant.