Disclosed are a functional beverage having effects of enhancing immunity, improving physical constitution, and overcoming fatigue, and a method for preparing the same. The functional beverage according to the present invention is characterized by containing mineral components including, based on 50 kg of the entire beverage, 7300~7500 mg of potassium (K), 6300~6500 mg of sodium (Na), 120~130 mg of silicon (Si), 55~65 mg of calcium (Ca), 13~17 mg of magnesium (Mg), 3~4 mg of aluminum (Al), 2~3 mg of iron (Fe), 0.2~0.4 mg of zinc (Zn), 0.1~0.3 mg of titanium (Ti), 0.1~0.3 mg of barium (Ba), 0.1~0.3 mg of manganese (Mn), 0.1~0.3 mg of strontium (Sr) , 0.1~0.3 mg of phosphor (P), 0.05~0.15 mg of chromium (Cr), 0.05~0.15 mg of zirconium (Zr), 0.01~0.1 mg of lithium (Li), and 0.005 ~0.015 mg of nickel (Ni), and the balance water and non-metallic components forming compounds with the respective minerals.Linvention concerne une boisson fonctionnelle ayant des effets damélioration dimmunité, damélioration de constitution physique et de lutte contre la fatigue, et son procédé de préparation. La boisson fonctionnelle selon la présente invention est caractérisée en ce quelle contient des composants minéraux comprenant, sur la base de 50 kg de la boisson totale, 7300~7500 mg de potassium (K), 6300~6500 mg de sodium (Na), 120~130 mg de silicium (Si), 55~65 mg de calcium (Ca), 13~17 mg de magnésium (Mg), 3~4 mg daluminium (Al), 2~3 mg de fer (Fe), 0.2~0.4 mg de zinc (Zn), 0.1~0.3 mg de titane (Ti), 0.1~0.3 mg de baryum (Ba), 0.1~0.3 mg de manganèse (Mn), 0.1~0.3 mg de strontium (Sr) , 0.1~0.3 mg de phosphore (P), 0.05~0.15 mg de chrome (Cr), 0.05~0.15 mg de zirconium (Zr), 0.01~0.1 mg de lithium (Li) et 0.005 ~0.015 mg de nickel (Ni), et léquilibre entre leau et les composants non-métalliques formant des composés avec les minéraux respectifs.면역 강화, 체질 개선 및 피로회복 효과가 있는 기능성 음료 및 그 제조 방법에 대하여 개시한다. 본 발명에 따른 기능성 음료는, 음료 전체 50kg에 대하여, 칼륨(K) : 7300~7500mg, 나트륨(Na) : 6300~6500mg, 실리콘(Si)
