The formation of the Japanese s mental consciousness particularly the group consciousness and the sense of crisis,has its unique historical perspective.

This paper reveals the Japanese deep group consciousness throughout history by analyzing the common language phenomena and its abundant humane cultures.

The group consciousness is deeply rooted in Japanese ideology and has great influence on their be- havior.

To guarantee actual effects of the work of Communist Youth League,it is a beneficial try to improve consciousness of leagues with advanced theories,to guide and standardize leagues with regulations,to care about and help leagues with the sincere services and to attract leagues by creating new activity forms.