Authors: Ahmad1 | Kurniadi2 | Aniharyati3 | Muhtar4 Abstract Development defined as the enhancement of body tool function that can be achieved through the body, maturity, and learning. Children were not as described by public as a passive, parasite, who always accept and never give, so there’s a need of attention to development including language development that will determine the direction of further development in the life of children. The problem was how the relationship between mother’s knowledge level of child language development with handling behavior. The benefits of research for the community was can increase knowledge of the mother about the behavior of handling the language development of children aged 1-4 Years, especially about the relationship of mother’s knowledge about the development of the language of children with the behavior of language development of children Age 1 – 4 Years. Samples were taken from mothers who have children 1 – 4 years old in Kalampa Village District Woha. Data was analyzed and concluded by using a statistical test of Spearman rho and found that was a significant correlation between mother’s knowledge about children language with behavior in handling to child language development with p = 0.025 from standard of meaning level α = 0.05 Keywords: Knowledge, Children, Language development |