ABSTRACT Background: Dental caries is a major problem in children’s oral cavity. Beside caries, the prevalence of gingival bleeding in children was also by plaque buildup due to poor oral hygiene. Toddlers are one of the groups most vulnerable to dental and oral diseases because they generally still have behaviors or habits that are less supportive of dental health. Primary teeth are indicators of dental health in preschool children needed to assess the dental health of children. Mother’s education, socio economic, and knowledge is one of the factors that affect health status.Objective: This study aims to determine the relationship of mother’s education and knowledge of the status of caries and periodontal in children aged 3-6 years.Methods: This study used observational analytic with cross-sectional and total sampling conducted in Paud Temoran Village, Sampang with respondents of 50 mothers and their children. WHO and dmft examination sheet to measured child periodontal and caries status. Questionnaire sheet to measured mother’s knowledge. Data analysis used spearman correlation test. Results: Statistical results between the level of education and caries status got a significant correlation, besides the results of statistics on education, knowledge and socioeconomic levels with periodontal status show insignificant correlation.Conclusion: There was a significant correlation between the level of education and caries status while the level of education, knowledge and socioeconomic with periodontal status there is no significant correlation.