A three-dimensional, 3D, video communication method for use in a multi-party video communication system, the multi-party video communication system comprises a Multipoint Control Unit, MCU, at least two session parties, and a terminal corresponding to one session party in the at least two session parties, the state information of each session party indicates that a display mode of each session party is 3D display mode or the display modes of the session parties are not all the 3D display mode, the display capabilities of the terminal comprises 2D display mode or 3D display mode, the method comprising: receiving, by the MCU, video information of the at least two session parties, wherein the video information of at least one session party is 3D video information; and processing, by the MCU, the video information received from the at least two session parties according to state information of the at least two session parties and display capabilities of the terminal; wherein the processing of the video information received from the at least two session parties according to the state information of the at least two session parties and the display capabilities of the terminal comprises: synthesizing, by the MCU, two-dimensional, 2D, video streams of each session party according to the video information of each session party if the display capabilities of the terminal do not support 3D display; synthesizing, by the MCU, 3D video streams of each session party according to the video information of each session party if the display capabilities of the terminal support the 3D display and the state information of each session party indicates that a display mode of each session party is 3D display mode; synthesizing, by the MCU, the 2D and 3D video streams of each session party according to the video information of each session party and the display mode of each session party if the display capabilities of the terminal support the 3D display and the state information of each session party indicates that the display modes of the session parties are not all the 3D display mode; and sending the synthesized video streams to the terminal. receiving, by the MCU, video information of the at least two session parties, wherein the video information of at least one session party is 3D video information; and processing, by the MCU, the video information received from the at least two session parties according to state information of the at least two session parties and display capabilities of the terminal; wherein the processing of the video information received from the at least two session parties according to the state information of the at least two session parties and the display capabilities of the terminal comprises: synthesizing, by the MCU, two-dimensional, 2D, video streams of each session party according to the video information of each session party if the display capabilities of the terminal do not support 3D display; synthesizing, by the MCU, 3D video streams of each session party according to the video information of each session party if the display capabilities of the terminal support the 3D display and the state information of each session party indicates that a display mode of each session party is 3D display mode; synthesizing, by the MCU, the 2D and 3D video streams of each session party according to the video information of each session party and the display mode of each session party if the display capabilities of the terminal support the 3D display and the state information of each session party indicates that the display modes of the session parties are not all the 3D display mode; and sending the synthesized video streams to the terminal. synthesizing, by the MCU, two-dimensional, 2D, video streams of each session party according to the video information of each session party if the display capabilities of the terminal do not support 3D display; synthesizing, by the MCU, 3D video streams of each session party according to the video information of each session party if the display capabilities of the terminal support the 3D display and the state information of each session party indicates that a display mode of each session party is 3D display mode; synthesizing, by the MCU, the 2D and 3D video streams of each session party according to the video information of each session party and the display mode of each session party if the display capabilities of the terminal support the 3D display and the state information of each session party indicates that the display modes of the session parties are not all the 3D display mode; and sending the synthesized video streams to the terminal.