During Anti-Japanese war, a great number of people who lived in the downstream of Yangzi River moved into Chongqing. The local people first conflicted with the outsiders since they had different social custom,cuhure background, and thoughts. After a long period of conflict, however, these differences were integrated in some aspects. In ibis case, the integration of custom and culture emerged in the culture exchange, which was reflected in the changes in diet,language, custom, culture, and thoughts.