invention Red Ginseng extract is added to a mixture of milk and skim milk mixed lactic acid bacteria strains ABT-L Lactobacillus acidophilus, Bifidobacterium longum and Streptococcus thermophilus red ginseng fermented by inoculating the yogurt has a very effective immune enhancing activity .본 발명은 홍삼 농축액을 첨가한 우유 및 탈지분유 혼합물에 유산균 혼합균주 ABT-L Lactobacillus acidophilus, Bifidobacterium longum 및 Streptococcus thermophilus를 접종하여 발효시킨 홍삼 요구르트는 면역 활성이 증강된 뛰어난 효과가 있다.