From the different research perspective, the research on the popularization and investigation of Putonghua in ethnic areas has different results. Among them, in the field of education, the research of popularization includes teachers and students training and usage; in the field of daily life, the research of popularization including language environment, social group and geographic factors under the popularization of Putonghua survey; in addition, there are some scholars who research on the influence of minority language and the local dialect on Putonghua.