The invention discloses a human face beautifying method based on non-supervision optimal beauty features and a depth evaluation model. Apparent features extracted with the CDBN are used for establishing the human face beauty depth evaluation module, the optimal human face beauty features are studied through a non-supervision cluster and a beauty approximation function, and therefore human face sample images are beautified under the guidance of the human face beauty depth evaluation model by utilizing the features and a geometric deformation mode. After different samples to be beautified are beautified by the human face beautifying method, human faces of different beautiful styles can be obtained, so that the aesthetics of the human faces cannot be excessively single, diversity of beauty is embodied, and different requirements for aesthetics of different people are met. Meanwhile, based on the reasonable beauty attraction approximation function, it can be ensured that the human face images cannot be beautified into human faces of other types, and the basic features of the human face images can be reserved.