A picture processing method and device. The method comprises: a picture processing device collecting N pictures for the same object at K positions, K being an integer greater than or equal to 1, and Nbeing greater than or equal to K (S101); and the picture processing device horizontally splicing at least two of the N pictures to generate a 3D picture, the horizontal splicing being splicing two pictures with overlapping parts into one seamless picture (S102). The method and device are advantageous for solving the problems of high cost, poor visual effect, complicated 2D/3D display switching and low practicability.