Although the vast majority of indigenous peoples in Taiwan consume alcohol, little is known about the relationship between alcoholic behavior and family relationships. A total of 471 residents from 3 villages in Alishan township in Taiwan were interviewed using a questionnaire that asked for demographic information and included the Family Function Scale and questions regarding the individual’s consumption of alcohol. It was found that 50% of the participants drink alcohol, and 71% of their family members consume alcohol; 47% of the respondents indicated excessive alcohol consumption (ie, were heavy drinkers). When individuals are knowledgeable about alcohol-related health issues, their families generally function better (odds ratio = 2.56; 95% confidence interval = 1.38-4.74; P < .01). Those who were moderate and heavy drinkers were 2.5 and 3.0 times, respectively, more likely to have poor family relationships than those who were light drinkers. It is necessary to promote the reduction of alcohol consumption among indigenous peoples.