The invention discloses a method and a device for face alignment and belongs to the image processing field. The method comprises steps that the characteristic point positions of m characteristic points of a face image are identified; according to weight corresponding to each characteristic point position of a face model, or according to each characteristic point position of the face image and the position of a face center, weight of each characteristic point position of the m characteristic points is determined; according to the determined weight, and corresponding relationships between the characteristic point positions of the m characteristic points and m characteristic point positions of the face mode, the face image is aligned with the face model. The method is advantaged in that problems of a relatively large alignment error and alignment inaccuracy caused by importance difference of the characteristic point positions in a face alignment process existing during directly aligning a face image with a face model according to identified characteristic point positions in the prior art are solved; the alignment error in the face alignment process is reduced, and face alignment accuracy is guaranteed.