Abstract: Lack of nutrition for a long time in baduta (children under five) named stunting. Baduta with stunting will experience any long-term growth body/height according to age. There is a tendency prevalence stunting increased in line with the increasing age. One of the causes of stunting among children under five is the knowledge nutrition is low. The aim of the research was to evaluate a level of knowledge nutrition to this incident stunting in Region Cempaka Public Health Center, Banjarbaru City. Research design used cross-sectional with sample size 51 (children 6-23 months years old). This research done in 3 months in Cempaka, Banjarbaru. Level of nutrition knowledge considered their ability to understand all the information related to food that contains nutrients that are beneficial to baduta and impact in accordance with general guidelines balanced nutrition. Data analyzed with test chi square with confidance interval (CI) 95 percents. There was a significant (p<0.05) between level of nutrition knowledge with stunting in children age 6-23 months in Banjarbaru. Mother's with low risk level of nutrition knowledge had higher risk to get a child with stunting. Mother’s nutrition knowledge had the role in stunting (children with age 6-23 months) in Cempaka, Banjarbaru. Keywords: baduta, level of knowledge, stunting nutrition