Indonesia is a country that have 255.993.674 population which makes Indonesia included in the top fourth biggest population in the world. KBPMPP is government organization which have a big part to control the birth of citizen and implement government program such as Keluarga Berencana. Sleman is one of the regions in Yogyakarta that have the biggest citizen density and the highest fertility rate. The purpose of this research is to examine social marketing strategy that use by KBPMPP to campaign government program Dua Anak Cukup, because this program is already implemented but it’s need to be campaign over and over again to reach the targets. The type of research method is qualitative approach with case study to analyze the data. The result of this research indicates that work together with business partners and use mass media as media to campaign are two of the social marketing strategies use by KBPMPP. KBPMPP also use voluntary from citizen to campaign the program as psychological approach because citizen more comfortable if the program campaign use direct communication.