Abstract :
The myth is information that is actually wrong but is considered true because it has been circulating from generation to generation.This research is indeed to analyze the myth in Rempung ethnic group of South Pringgasela village. The researcher focuses on the myth of tau sebai ndek kanggo tunuk lengan or in English language is women cannot sleep on their back, and finding effect of the myth to women. The method used is ethnography, Creswell (2015:125) ethnography is a qualitative design whose researchers describe and interpret the same patterns of values, behaviour, beliefs, and language from a group of the same culture.The conclusion from the research on the myth should women not sleep on their back or in the Rempung language the myth of tau sebai ndek kanggo tunuk lengan is that myth have educational value to educate women from the Rempung ethnic group in South Pringgasela village about how to understand the ancestral tradition of good manners as a woman.