Introduction: Early Childhood Caries (ECC) is one of the main oral problem in children worldwide. In 2016, The World Health Organization reported that the prevalence of ECC in Indonesian children aged 3 to 5 years old was 90% with caries index (dmft) value higher than 6. It means that Indonesian children were categorized as high risk toward ECC. Several factors have been reported to be risk factors for ECC as well. The aim of this study is to inves- tigate the correlation of ECC prevalence with feeding pattern and mother’s behaviour in maintaining children’s oral hygiene. Methods: This is a cross sectional study and conducted on 87 mother-toddler pairs in Klungkung regency of Bali, Indonesia. The questionnaires were collected through remote interviews while intraoral assessment was done through examining the self-taken pictures of the children by respondents. Chi-square analysis were used to determine the correlation among variables. Results: The result shows that there is a significant correlation between ECC prev- alence with feeding pattern (p value < 0.05) and mother’s behaviour in maintaining children’s oral hygiene (p value < 0.05). Conclusion: The conclusion of this study is that feeding patterns and mother’s behaviour in maintaining children’s oral hygiene have correlation with the presence of ECC.