The invention discloses a reversible three-dimensional model visible watermark embedding method, and belongs to the field of watermark embedding. The method mainly comprises the following steps: 1, awatermark embedding part: 1.1, acquiring watermark information, 1.2, selecting a smooth area, 1.3, projecting the smooth area to a two-dimensional plane, 1.4, aligning a watermark array with the two-dimensional smooth area, and 1.5, subdividing grids to embed watermarks; 2, inverse process: performing inverse process; 2.1, finding out a smooth area embedded with the watermark; 2.2, finding a newlyadded vertex and a triangular patch which is divided into a plurality of parts when the watermark is embedded; 2.3, deleting the newly added vertexes and combining the triangular patches which are divided into a plurality of parts into a whole; the reversible visible watermark embedding method provided by the invention is used for recognition copyright and data protection of a three-dimensional model file; according to the method, the original model is slightly modified, the model with the embedded watermark can be recovered to the original model, various watermark information such as Chinesecharacters, English letters, numbers and graphic marks can be embedded into the three-dimensional model file, and certain robustness is achieved.