The present invention relates to a texture-based depth boundary correction method. The method comprises the steps of A1, inputting a texture image and a corresponding depth image, wherein the images are acquired by a depth sensor (such as a Kinect); A2, extracting the boundary of the texture image and the boundary of the depth image, and acquiring a depth boundary dislocation figure with the boundary of the texture image as the reference; A3, calculating the pixel value difference between an accurate depth point (sweet spot) and an error depth point (dead point) and determining a boundary dislocation area; A4, according to the distribution characteristics of the boundary dislocation area, adaptively determining the side length of a square window for depth enhancement processing, correcting the depth of the dead point in the window, eliminating the boundary dislocation area. According to the invention, the accuracy and the time-domain stability of the boundary of the depth image, acquired by the Kinect and other low-end depth sensors, are significantly improved. The method is applied to the fields of three-dimensional reconstruction, free viewpoint video coding and the like, and can effectively improve the scene three-dimensional reconstruction quality and the coding efficiency.