Taiwan government has formally incorporated mother-tongue language teaching into the school education for several decades. Nevertheless, studies on language revitalization have pointed out that the rate of loss of native and indigenous language does not seem to have diminished. With the 12-year-basic-education will be formally on the road in the 2019 school year, elementary and higher schools across the country are starting preparations for launching the new curriculum. In view of the relatively scare education resources in rural areas, and mind of native languages teaching in rural elementary schools, the research utilizes focus group interviews and case study to investigate the issues, challenges, and policy suggestions while elementary schools’ preparation of launching the new curricular guidelines of native languages. Eventually, the research attempts to provide policy suggestions for officially launching the new curricular guidelines and the future development of curricular reform.