that there are three of Mon-khmer spoken ethnic groups in China namely Bulang, De’ang and Wa. They are settlements who live closely to Dai and Jingpo ethnic groups in Yunnan. According to the ethnographic and linguistics comparative study, we found both correspondences... and contrastive points. The contrastive points show the singularity in each language. While, the correspondences show that each language is related with the language at the branch level. The result of language comparison shows that Bulang language is closest