A method for multi-group audio-video interaction, comprising: receiving, by an audio-video interaction system, a virtual group creation request initiated by a first user, creating a first virtual group, and determining a first session group to which the first user belongs; associating, by the audio-video interaction system, the first session group with the first virtual group, and adding all session users in the first session group to the first virtual group; the method being characterised by further comprising: determining, by the audio-video interaction system, a second session group to which a second user belongs, when receiving a virtual group join request for the first virtual group initiated by the second user; associating, by the audio-video interaction system, the second session group with the first virtual group, and adding all session users in the second session group to the first virtual group, to enable each session user in the second session group to receive an audio-video stream of each of other session users that are in the first virtual group and not in the second session group; and sending, by the audio-video interaction system, a user list of the second session group to other session users that are in the first virtual group and not in the second session group, to enable the other session users not in the second session group to incrementally pull and play an audio-video stream according to the user list; wherein the audio-video interaction system is configured to pull and play, for each session user in the session group and the virtual group, an audio-video stream of the session user. receiving, by an audio-video interaction system, a virtual group creation request initiated by a first user, creating a first virtual group, and determining a first session group to which the first user belongs; associating, by the audio-video interaction system, the first session group with the first virtual group, and adding all session users in the first session group to the first virtual group; the method being characterised by further comprising: determining, by the audio-video interaction system, a second session group to which a second user belongs, when receiving a virtual group join request for the first virtual group initiated by the second user; associating, by the audio-video interaction system, the second session group with the first virtual group, and adding all session users in the second session group to the first virtual group, to enable each session user in the second session group to receive an audio-video stream of each of other session users that are in the first virtual group and not in the second session group; and sending, by the audio-video interaction system, a user list of the second session group to other session users that are in the first virtual group and not in the second session group, to enable the other session users not in the second session group to incrementally pull and play an audio-video stream according to the user list; wherein the audio-video interaction system is configured to pull and play, for each session user in the session group and the virtual group, an audio-video stream of the session user. determining, by the audio-video interaction system, a second session group to which a second user belongs, when receiving a virtual group join request for the first virtual group initiated by the second user; associating, by the audio-video interaction system, the second session group with the first virtual group, and adding all session users in the second session group to the first virtual group, to enable each session user in the second session group to receive an audio-video stream of each of other session users that are in the first virtual group and not in the second session group; and sending, by the audio-video interaction system, a user list of the second session group to other session users that are in the first virtual group and not in the second session group, to enable the other session users not in the second session group to incrementally pull and play an audio-video stream according to the user list; wherein the audio-video interaction system is configured to pull and play, for each session user in the session group and the virtual group, an audio-video stream of the session user.