Data of toddler with underweight in Puskesmas Banjar from 2011 to 2014 has increased. The national target for toddlers with underweight is <5% and the target area for toddlers with underweight is <1.5%. In national target, the increase is still below the target of 3.25%. However, when compared with the target area, the percentage of children under five with underweight at the Puskesmas Kabupaten Banjar Martapura is still a problem. This study aims to analyze the influence of intra-organizational coordination on the performance of Puskesmas in growth and development childhood program. This research is a quantitative research with analytic observational approach. The sample of research is 18 Puskesmas. The number of respondents from this study amounted to 126 people spread in 18 Puskesmas. So the information from each puskesmas obtained from 7 respondents. The results of the study were analyzed based on the type of dependency theory of Thompson and coordination mechanisms theory of Mintzberg. The result of the research shows that coordination adjustment has an effect on performance. This means that if the type of dependence in accordance with the coordination mechanism, it will have a positive impact on the resulting performance. The results of this study prove the theory of coordination by Shortell, coordination is a conscious activity to unite and harmonize different potentials so that it can function harmoniously to achieve organizational goals. In this research, the coordination is operationalized to unify the activities implemented by the involved sections in the Puskesmas to achieve the optimal performance of growth and development childhood program.