The invention relates to a human face image based emotional health monitoring method. The method includes the steps of automatically capturing a human face image of a user, constructing a human face image feature vector, completing human face authentication, classifying human face emotions, early warning emotional health and sending early warning information. The invention also discloses a human face image based emotional health monitoring mobile phone. The mobile phone comprises a user mobile phone using detection module, a mobile phone camera control module, a human face image capturing module, a human face image feature vector building module, a human face recognition module, a human face emotion classification module, an emotional health early warning module, an early warning information sending module, an emotional record management module, a human face expression classification model learning module and a human face recognition model learning modules. The human face image based emotional health monitoring method and mobile phone has the advantages that the human face expression capturing is more natural, the emotional health status evaluation is more real and the emotional health monitoring is easier and easy to use.