Because the environment of intercourse become narrow and live together with the ethnics of me population, the minority languages such a O-Du, Bo-Y, Co-Lao, A-Lian and Ma-Liang in Vietnam axe vanishing gradually.

• 摘要由于交际环境变小、与其它人口多的民族杂居等原因，越南的尔都、布依、仡佬、阿连和马良等少数民族的语言正在出现逐渐消亡的危机。