The present invention provides a method for video synchronization rendering in an environment of cloud desktop. The method comprises the following steps: an image draw command is divided into a draw command at a video and image area and an image draw command at a non-video area according to updated frequency; a portion overlapping with the video area in the non-video area is eliminated; a video and image draw command is generated through merging adjacent or overlapped video areas and is sent to a client; and rendering display of the image is immediately carried out after the client receives the video draw command, such that the synchronization rendering at the non-video area and at the video area is completed. The method provided by the invention is capable of maintaining synchronization rendering of videos when the present image draw command is detected as a video stream by a server, thereby user experience is improved.