Abstract
The study aimed to analyze the effect of breastfeeding duration, mother's age at pregnancy, the type of milk the baby drank for the first six months and infectious diseases on the incidence of stunting in children. The research stage was to identify the number of stunted children, and then all the stunted children were measured for height. The mother of the stunting child filled out the relevant questionnaire about the variables studied. The research design used was descriptive-analytic with a cross-sectional study approach with retrospective study data. The descriptive study results on 139 mothers who had children aged 4-12 months found that there were 13 stunted children in Makassar City and 46 stunted children in Tanah Toraja Regency. The variable mother's knowledge about stunting was found that 45 (46.4%) had poor knowledge and 14 (33.3%) had good knowledge. The results of the bivariate analysis were found to have a significant relationship with the incidence of stunting, namely the length of breastfeeding and infectious diseases with p-value <α, meaning that the length of breastfeeding given to babies is up to at least six months, so it can help the child's height growth to be normal, and infectious diseases suffered by children from 0-12 months can cause the child's height growth is not normal. The logistic regression test results found that the most dominant factor causing the occurrence of stunted children was a respiratory disease at the age of 4-12 months.

Key words: Stunting, length of breastfeeding, type of milk, mother's age, infection