PURPOSE: A composition containing Gombo-baechu(cabbage) juice, Bupleurum falcatum L. extract, and Paeonia lactiflora Pall. extract is provided to ensure safety and to enhance interferon-gamma generation. CONSTITUTION: A composition for enhancing immunity contains 0.5-0.99 wt% of Gombo-baechu juice, 8-12 wt% of Bupleurum falcatum L. extract, and 8-12 wt% of Paeonia lactiflora Pall. extract. The Gombo-baechu juice is prepared by filtering and heating Gombo-baechu juice at 90 Deg.C. or less. The Bupleurum falcatum L. extract and Paeonia lactiflora Pall. extract are prepared by boiling each herbs at 120 Deg.C. and extracting at 130 Deg.C. A health functional food contains the composition. [Reference numerals] (AA) Embodiment 1; (BB) Embodiment 2; (CC) Comparative embodiment; (DD) Interferon gamma generation effect본 발명은 곰보배추즙, 시호(Bupleurum falcatum L.) 추출물 및 작약(Paeonialactiflora Pall.) 추출물을 함유하는 것을 특징으로 하는 면역증강용 조성물을 개시한다.