A method for synthesizing a figure of a virtual object includes: obtaining a figure image of the virtual object, and original face images corresponding to a speech segment; extracting a first face key point of the face of the virtual object, and a second face key point of each of the original face images; processing the first face key point to generate a position and posture information of a first three-dimensional 3D face; processing each second face key point to generate vertex information of a second 3D face; generating a target face image corresponding to each original face image based on the position and the posture information of the first 3D face and the vertex information of each second 3D face; and synthesizing a speaking figure segment of the virtual object, corresponding to the speech segment, based on the figure image of the virtual object and each target face image.