The present invention relates to a nutrient solution for hydroponically cultivating ginseng and a preparation method thereof. More specifically, as a nutrient solution for hydroponically cultivating ginseng to which herbal extracts and EM culture solutions are added and mixed in a low-concentration base nutrient solution for lettuce hydroponics, the present invention promotes a growth of ginseng in hydroponics and prevents damping-off, which is a leading horticultural disease acquired by the ginseng. In addition, organosynthetic pesticides are not used in a cultivation of the ginseng, thereby enabling a cultivation of environmentally-friendly ginseng. [Reference numerals] (AA) Base nutrient solution; (BB) Adding herbal extracts and EM culture solutions; (CC) Mixing; (DD) Nutrient solution for ginseng hydroponic cultivation본 발명은 인삼 수경재배용 양액 및 그 제조방법에 관한 것이다. 더욱 상세하게는 상추 수경재배용 저농도 기초 양액에 생약재 추출물과 EM 배양액을 첨가 혼합한 인삼 수경재배용 양액으로서 수경재배시에 인삼의 생육을 촉진하고 인삼의 주요 병해인 입고병을 예방할 수 있다. 인삼의 재배에 유기합성 농약을 사용하지 않으므로 청정 인삼의 재배가 가능하다.