Mental health of high school students,and its coping styles and their relationship were investigated by using questionnaires. The results indicated that :1.The scores of mental health of high school students, in all factors were significantly higher than the counterpart in the norms of Chinese middle school students.2.The high school students mainly adopted wishful thinking, problem-solving and seeking social support in coping styles. 3.Each score of mental health negatively was significant negative correlation with problem-solving and seeking social support，but positive correlate with avoidance,blame-self and wishful thinking.