Abstract: The present invention relates to an oral health prediction apparatus and method using a machine learning algorithm, which, when a user uploads an oral photo, comprehensively analyzes whether the user has braces, a dental caries state, a prosthesis state, and the like through a photo analysis using the machine learning algorithm, to enable exact prediction of oral health of the user. When a user provides an oral image of the user through a network by using a user terminal and requests an oral health determination result, the present invention analyzes the oral image by using the machine learning algorithm to predict an oral health state, analyzes a dental caries state and a prosthesis state through the analysis of the oral image, predicts the oral health state on the basis of the analyzed dental caries state information or periodontitis state information and prosthesis state information, and provides oral health state prediction information to the user.