It is key issue how public and private role in income maintenance for elderly be shared. Thus This study analyze income sources for elderly in Korea with focusing on role sharing of the public and private sector. Through it, this study aims to provide policy data for restructuring of income maintenance scheme for elderly. The elderly`s income sources constitute work income, asset income, private transfer income, and public transfer income. Along with international comparing of elderly`s income sources, Korea and Taiwan mainly depends on private transfer income(family income support), while Germany, Japan, and United States are mainly depends on public transfer income(public pension). The general trend is decreasing of dependency of private transfer income and increasing of dependency of public transfer income in all over the world. According to elderly`s 1998 living condition research of Korea Institute for Health and Social Affairs, Korea elderly`s average income is 400 thousand Won. And with analyzing its constitution, work income is 30.9%(124 thousand Won), asset income is 20.4%(82 thousand Won), private transfer income is 38.4%(154 thousand Won), and public transfer income is 10.0%(40 thousand Won). Thus it is 3: 2: 4: 1 that the work: market: family: state share in Korea elderly`s income sources. Thus This study argues that role of public transfer income in income maintenance system for elderly should reinforce in Korea.