BACKGROUND: District with the highest stunting prevalence in Central Sulawesi province is Sigi District by about 43.0%. Its birthrate is 3.2 and the first marriage age is 19.9 years old. AIM: This study analyzed various relationships between family planning behaviors of early married couples with births and stunting, as well as its connection with baby care (colostrum, exclusive breastfeeding, completeness of immunization, supplementary feeding, and breastfeeding for up to 2 years old). In addition, it will describe family planning behaviors and baby care in a gender perspective as well. METHODS: The sample of this study was 40 early married couples in the last 3 years in the area of Marawola Health Center in Sigi District. Data analysis used Chi-square and Mouser to see the gender relationship gap in the choice of contraception and baby care. RESULTS: There was a relationship between family planning behavior and birth with p = 0.001, a large parity with the incidence of stunting with p = 0.002. Likewise, there was also a relationship between baby care (colostrum of p = 0.0016, exclusive breastfeeding of p = 0.003, completeness of immunization of p = 0.003, supplementary feeding of p = 0.00, and breast milk up to 2 years of p = 0.00) and the occurrence of stunting in early married couples. The idea of family planning and child care is still dominated by wives, from the stages of planning, decision making, and implementation. Gaps occur because of unbalanced power relations. CONCLUSION: Family planning behavior and baby care (colostrum, exclusive breastfeeding, completeness of immunization, supplementary feeding, and breastfeeding for up to 2 years) affect the incidence of stunting in early married couples. The use of family planning and child care is still a gender gap which is dominated by wives.