The caries prevalence for groups of children in developing countries is still high and many of the Dental caries are not treated as having a negative impact on health in general, development, productivity, academic achievement, and quality of life. To determine the impact of caries severity or untreated caries on the quality of life of the child. The type of research used is analytic observational with cross-sectional study design, with a sample of elementary school students who is 8-10 years old as many as 164 students. The caries condition and searches severity status were assessed by the DMFT / dft index and the PUFA / pufa index, while the quality of life used the CPQ8-12 questionnaire. Caries prevalence with Decay (D) value is 90.2% while the prevalence of caries severity for pufa / PUFA value> 1 is 58.3%. The percentage of untreated caries for male sex was 36.32%, female gender was 29.62%. Percentage of untreated carious teeth was 33%. For groups of children with PUFA / pufa> 1 at risk 2.4 times significantly impact on quality of life (p <0.05). The severity of caries or untreated caries condition as measured by the PUFA / pufa index has an impact on the quality of life of the children in all assessment dimensions.