Objective To investigate characteristics of key senior high school students’self-consistency and congruence and its relationship with stressor and provide the scientific basis for cultivating health personality and promoting mental health education.Method Self-consistency and Congruency Scale（SCCS）and stressor questionnaire were applied on 531 students in key senior high school.Results 21.5% of the tested students were got into high level.There were significant differences in self-rigidness between male and female students（t=2.519

p<0.05）.All stressor factors correlated positively with the general level of self-consistency and congruence.The sub-scales of SCCS correlated positively with at least one of the factor of stressor questionnaire and predictive rate of self-consistency and congruence by stressor is 20.0%.Conclusion A part of students are accounted into poor self-consistency and congruency and more attention should be paid to such students in mental health education.Stressor could predict individuals’ self-consistency and congruence in some degree.