The objective of this study is to examine the socioeconomic and intervening determinants of fertility control in Korea.  The conceptual framework applied here is based on the synthesis framework of fertility control developed by Easterlin and Crimmins.  The data came from the 1974 Korean National Family Survey, which was conducted as part of the World Fertility Survey.  The study focuses on the relative importance of the socioeconomic factors and intervening variables in the determination of fertility control.  The most interesting finding is that there are only small differentials in fertility control by socioeconomic factors.  The analysis emphasizes the importance of examining the determinants of fertility control in terms of the intervening variables, which include the components of natural fertility, desired family size, and costs of fertility control.  These intervening variables provide general support for the theoretical predictions.  Moreover, most of the coefficients for these variables are statistically significant at the .05 level.  The analysis also shows that motivation for fertility control is an important factor in determining use of fertility control.