Self-identity crisis is a stage psychological contradiction which is common among college students. Focusing on the college students who are vulnerable to self-identity crisis, we can efficiently understand the objects to be aimed at. Summarizing psychological problems caused by anxiety, perplex, or ego role confusion in self-identity crisis, can help Psychological counselling more accurately. Analysing the negative effects brought by self-identity crisis in the study, life, self-awareness or other fields, can help mental health educators correctly decide the inducement to problems of students, making great sense in college mental health education.