This study aims to understand the correlate of blood donating intention factors and use social marketing methods to increase blood donating intention. Based on the theory of planned behavior and social exchange. A response rate of 79 percent yielded a sample of 300. Data analysis included descriptive statistics, one-way ANOVA, factor analysis and multiple regression. Qualitative Analysis included participant observation and indepth interviewing. The results showed that norm, participant benefit and no participant can pay the costs influence blood donating intention. One-way ANOVA indicated significant different between education, blood donating frequency, communication tools in blood donating intention.