This thesis has a purpose to describe the semantic relation of words in Bekidoh Language of Dayak Jangkang (a native ethnic group) in Sanggau Regency. This thesis applies the descriptive method in form of qualitative research. The data in the research is the words contain the semantic relation in Bekidoh Language of Dayak Jangkang (BBDJ), and the source of data in the research is the BBDJ which is used by people in Serambai Jaya Village, Mukok Sub district, Sanggau Regency. The kinds of techniques in the research are interview, inducement, and attentive technique. The procedures and the technique of data analysis use are transcription, translation, classification, analysis, and conclusion. Based on the result of data analysis, the researcher concludes that there are 51 synonym, 48 antonym, 12 homonym, 10 hyponym, and 15 polysemy in Bekidoh Language of Dayak Jangkang or BBDJ (Bahasa Bekidoh Dayak Jangkang).