Abstract
Investigating the past and present literatures of west and east about pediatric constitutions and Dong-Eu-Su Se-Bo-Won $\ll$東醫壽世保元$\gg$, we obtained such conclusions : 1. In ancient literatures about pediatric constitution, physiologic and histologic characteristics are considered as pediatirc constitution. 'Pure Yang(純陽)' 'Yang is overabundant, Yin is insufficient(陽有餘陰不足)' are used for definitions of pediatric characteristics. 2. In recent literatures about pediatric constitution, adding to definitions of ancient constitution, more scientific, objective and rational criterion are intrduced. 3. In Sa-Sang(四象), limits of pediatrics is defined to children below sixteen years. 'Yu(幼)' in Dong-Eu-Su-Se-Bo-Won $\ll$東醫壽世保元$\gg$. 4. In Dong-Eu-Su-Se-Bo-Won $\ll$東醫壽世保元$\gg$, the writings about 'So-Yang-In(少陽人)' is most, those about 'So-Eum-In(少陰人)', 'Tae-Eum-In(太陰人)' and 'Tae-Yang-In(太陽人)' are in sequence. 5. In conclusion, Je-Ma Yi(李濟馬), inventor of Sa-Sang(四象), consider that pediatric constitutions are not different from those of adult.