Casebullying in Indonesia that occurred in schools from 2019 to 2020 there were 1,480 cases. Causative factors of actionbullying need to be identified to prevent high numbersbullying at school. The purpose of this study was to determine the relationship between the factors that influence actionbullying in school-age children in the Elementary School of the Kapas District of Bojonegoro. Research design usingcorrelative descriptivethrough approachcross sectional study. The study population was all elementary school-age children in the Kapas Bojonegoro District. Sampling techniquepurposive sampling with a total sample of 94 respondents. Data collection was carried out on January 12 - February 15 2019. The data collection tool was a questionnaire in the form of a scalelikert by interview method. Data analysis using testWho Square(2x2) withConfidence Interval 95% (α = 0.05). The results showed that there was a relationship between individual factors (P-value = 0.000), family factor (P-value = 0.000), peer factor (P-value = 0.003), school factor (P-value = 0.048), media factor (P-value = 0,042) with actionbullying in school age children. It is hoped that the school can improve discipline in schools and provide counseling guidance to children who bully, for parents to avoid giving punishment with violence
