There are around 1200 Dai-Lue and Lao-Lue ethnic people,who migrated from Xishuangbanna of China and Muang Yo. of Laos,living in Denver City,Colorado,forming the largest Dai-Lue and Lao-Lue community in the US. The earliest Dai-Lue and Lao-Lue comers have settled there for about 40 years,and others are the second and third generation Lue who were born in the US. The social life of the Lue people who migrated to Denver City has undergone three phases:( a) adapting to the local social environment;( b) getting settled down and integrating into the American society;( c) rebuilding their ethnic identity as well as cultural and religious traditions in the US. Currently,a Dai-Lue and Lao-Lue society is in the forming in Denver based on the Lue ethnic identity,Theravada belief,the Lue ethnic culture and the associational relationship. Such a situation has not only enhanced the subsistence of the Lue people in the US,but also gathered separate Lue immigrants into a closely connected and socially well organized ethnic group,which has gained growing recognition of the American society. Thus,the Lue in the US is about to complete the course from subsistence survival to cultural survival.