ackground and purpose: Over the past decade, the ratio of high school truancies does not have significant change while the dropout rate is decreasing in Japan. Mental health is an important issue during the adolescent period. The descriptions of the health education textbooks revised in 2013 are investigated to understand the current condition and controversial points of stress of the students. methodology: All the three kinds of health education textbooks in use in senior high schools in Japan were analyzed for comparison. results: All the three textbooks mention the mind-body correlation with an explanation of the function of the cerebral neocortex and the cerebral limbic system and their relations with the autonomic nervous system and the endocrine system. One textbook mentions the stress theory of Prof. Hans Selye. PTSD (Posttraumatic stress disorder) and psychosomatic disorder are mentioned in all of them, but the conflict was in only one of them. The dealing with stress occupies a big part in all the textbooks. Change of pace, importance of communication, consultation to reliable people and professionals are mentioned. Many concrete ways of stress coping are in two textbooks. conclusions and suggestions: The mechanisms, various causes and the dealing of stress are well mentioned in all the textbooks. As the examples of wrong ways of stress coping, smoking, excessive alcohol intake and drug use are suggested to be mentioned for the clear understanding of the young students. Keywords: education, adolescent health, mental health Key Messages 1. In the Japanese high school health education texbooks, the mechanisms, various causes and the dealing of stress are well mentioned. 2. Smoking, excessive alcohol intake and drug use are not mentioned as the wrong examples of stress coping. 3. For the mental health of adolescence, students have to know many ways of stress coping in adequate approach.