Urbanization brings the minority population change and migration,on the one hand,in order to adapt to the city society they need to learn Mandarin and local language,on the other hand,the population migration brings the population structure change and intergenerational fault phenomenon of language use,all of these have a certain impact on the ecological balance of ethnic minority language in our country.To maintain the ecological balance of minority languages,We need to strengthen the promotion of Putonghua,to ensure effective communication and exchanges between different ethnic groups,to eliminate the actual resistance of the transfer of labor force in the construction of urbanization,but also take effective measures to protect the diversity of minority languages and local dialects,and pay attention to the dynamic use of the minority language.