The purpose of present study is to test the influence of social mentality on Psychological Harmony, a selfdesigned survey on social mentality and psychological harmony was used to collect data from 1,544 people covering 13 cities and counties in Chongqing. The results consistently show that the level of psychological harmony of landlosing civilian and immigration is lower than common civilian, and their sense of governmenttrust, sense of social justice and life satisfaction are lower than common civilian; the level of psychological harmony of civil servant and civilian in institutions and enterprises is better than other people, and their life satisfaction, sense of governmenttrust, sense of social justice and social safety are better than peasants(peasantworkers) and the jobless; The wealthy enjoy the highest level of life satisfaction, the middleincome group has the strongest sense of social problem, while the lowincome group has the strongest sense of social stress, and all they have lower sense of social justice and society safety. All the people own lower sense of governmenttrust, sense of social justice and social safety no matter where they come from the city, suburb, county, village and town; The civilian’s social mentality is the positive predictor of psychological harmony, especially the civilian’s life satisfaction, sense of governmenttrust and social problem are the key factors of psychological harmony.