The embodiment of the invention provides a 3D face image generate method, a device and an electronic device. The method comprises the following steps: recognizing a face in the image and obtaining a first face feature point information, wherein the human image feature point is used for uniquely identifying the face; obtaining the first three-dimensional face model parameter information according to the first face feature point information and the pre-trained convolution neural network model; processing a three-dimensional average face model according to the first three-dimensional face model parameter information to obtain a three-dimensional face image corresponding to the face. The method and the device do not need to collect multiple images from multiple angles, and only a single imageis required to generate a three-dimensional human face image. Convolution neural network images can automatically generate more accurate and realistic facial expressions and postures without hardwaresupport and reduce costs in many ways.
3D face image generate method, device and electronic device