From the perspective of creating a strong sense of community for the Chinese nation,on the basis of the latest social survey data of ethnic minority areas in Yunnan Province,this paper presents an empirical study on the national identity and related factors of ethnic minority groups in daily life in the new era background.The results of data analysis show that there is a significant positive correlation between ethnic identity and national identity of ethnic minority groups.And the correlation is significantly different among groups at different economic and cultural levels and with different understanding to ethnic policies.In addition to ethnic identity,factors such as age,culture,economy,and policy could affect national identity significantly.This study suggests that when we study the national identity of ethnic minority groups,in order to get fully recognition about the effects of regional,economic,social,cultural,policy,and ethnic identity factors and their dynamic interactions on the national identity,it is necessary to shift the research perspective from special historical background or major historical events to daily life in the new era background,from political and cultural elites to common people,from structural analysis to action analysis.