Since 1980s, the study of Self-Worth (SW) or Self-Esteem (SE) has been paid great attention by many psychologists from all over the world, and more and more people have been conceived of its importance to the development of hiunan and society. This paper aimed to fully evaluate mental structure, age characteristic of self-worth of middle school students and the effects of circumstances like society, school, family, on the development and maturity of self-worth in the perspective of cross-culture, by means o...