The invention provides an image beautifying method and a mobile terminal. The method comprises steps that face characteristic points of an original image are acquired; the original image and the face characteristic points are inputted to a regression model for processing through a preset regression model to acquire an optimal parameter set; the preset regression model is trained according to multiple image samples and a target parameter set corresponding to the image samples to acquire the regression model; the original image is beautified according to the optimal parameter set. The method is advantaged in that the optimal parameter set is acquired through the regression model acquired through pre-training, image beautification is carried out through utilizing the optimal parameter set, manual operation of users can be reduced, image beautifying efficiency and the beautifying effect are improved, the method is suitable for various skin colors, skin types, attitudes, environments and light, and relatively strong robustness is realized.