By using mental harmony questionnaire researched and developed by Institute of Psychology of Chinese Academy of Sciences, this paper investigated mental harmony level of 899 Wuhan City residents to analyze current situation and differences of Wuhan City residents' mental harmony. The results showed that: Wuhan City residents' mental harmony is at a relatively high harmonious level, among which the family atmos- phere the highest while interpersonal the lowest; the mental harmony total score, family atmosphere and ego state were significantly...