Bilingual teaching in which ethnic minority spoken and written language are used along with the Han language is China's basic policy for minority education. By means of a survey of the present state of the use of Miao written language in teaching, this article analyzes problems in the policies for minority-language teaching in ethnically mixed communities in southwestern China and points out that the ways to resolve these problems are level-by-level management, development of specific policies, and the formulation of special policy implementation measures.