This study aims to analyze pregnant women's behavior, family support, and facilities on the estimated fetal weight in Kepahiang District. The research method used is descriptive-analytic research with a cross-sectional approach. The sampling process used the purposive sampling technique. The results showed that the majority of respondents with a good level of knowledge consisted of 54 people (64.3%); 47 respondents had a negative attitude (56%); respondents with sufficient action are 37 people (44.0%); respondents who received good family support were 54 people (64.3%); 60 respondents use public transportation to health services (71.4%); and respondents who had an abnormal estimated fetal weight (TBJ) were 61 people (72.6%). In conclusion, the attitude variable was the dominant factor in the incidence of estimated fetal weight in the Kepahiang Regency in 2021. Keywords: Family Support, Pregnant Women, Behavior, Means, Estimated Fetal Weight