The embodiment of the invention discloses a video watermark removing method, a video data publishing method and related devices. The video watermark removing method comprises the following steps: extracting multiple frames of image data from video data; detecting watermarks in the image data to obtain a plurality of initial watermark positions; determining the position belonging to the same watermark according to the plurality of initial watermark positions as a target watermark position; and removing the watermark in the target watermark position. According to the embodiment of the invention,the target watermark position belonging to the same watermark is determined according to the initial watermark position; wherein the target watermark position can include the initial watermark position of the watermark in each frame of image data; jittering of the detected initial watermark position is avoided. The problem that the watermarks in the video data cannot be completely removed due tothe fact that the detected initial watermark position deviates from the real position is solved, the watermarks in the clean video data can be removed after the watermarks of each frame of image dataare removed based on the target watermark position, and the video data watching experience of a user is improved.