Background: Stunting problems in toddlers, which until now are still a special concern in the world because it can inhibit the physical and mental development of children. Stunting is a chronic malnutrition problem caused by a lack of nutrient intake over a long period of time due to food intake that is not in accordance with the nutritional needs of the body. Toddlers who experience stunting will cause increased risk and stunted growth and development of children. The method used in this study was observational analytic with a controud case design. Sampling using proportional random sampling technique, obtained 86 respondents in accordance with the inclusion criteria, data collection was done using questionnaire sheets and using KMS to observe birth weight in infants, height and weight of the last weighing at the time of the study with questionnaire filling. The collected data is then processed by using the Chi Square test with α <0.05. The results of the statistical test showed that BBLR  (p = 0.005), Exclusive breastfeeding (p = 0.104), Mp-ASI (p = 0.121). The conclusion in this study is that BBLR affects the incidence of stunting, Exclusive breastfeeding and breastfeeding does not affect the incidence of stunting in children aged 12 to 59 months at the Campalagian Health Center in Polewali Mandar district.