The present invention relates to a process for preparing a purified water mixture, which comprises mixing 100 parts by weight of purified white sugar and 500 to 600 parts by weight of purified water per 100 parts by weight of purified white sugar to prepare a purified water mixture Mixing oligosaccharide mixture by mixing and stirring the oligosaccharide mixture in an amount of 20 to 40 parts by weight per 100 parts by weight of the whitening agent, 5 to 15 parts by weight of the gelling agent and 0.0001 to 0.001 part by weight of the aloe vera gel powder A first mixing step in which the purified water mixture and the oligosaccharide mixture are put into a tank and mixed and sterilized 30 to 45 parts by weight of a fermented milk fermentation broth obtained by inoculating lactic acid bacteria into a chrysanthemum extract per 100 parts by weight of sugar beet, and 15 to 25 parts by weight of an orange concentrate are added to the tank, followed by mixing and sterilization Adding 1 to 5 parts by weight of citric acid and 0.1 to 2 parts by weight of vitamin C per 100 parts by weight of the whitespace to the tank and heating the mixture And a cooling step of cooling the heated contents.According to the present invention, high functional ingredients such as gastrodine and vanillin are highly contained, which helps improve memory, attention and concentration, has a high absorption rate of active ingredients, is excellent in antioxidative activity, And it has an effect of easy ingestion by the elderly and children.본 발명은 정백당 100 중량부와, 정백당 100 중량부당 정제수 500 내지 600 중량부를 혼합 및 교반하여 정제수 혼합물을 만드는 정제수 혼합 단계 정백당 100 중량부당 올리고당 20 내지 40 중량부, 겔화제 5 내지 15 중량부, 알로에베라겔 분말 0.0001 내지 0.001 중량부를 혼합 및 교반하여 올리고당 혼합물을 만드는 올리고당 혼합 단계 상기 정제수 혼합물과 올리고당 혼합물을 탱크에 넣고 혼합한 후 멸균시키는 1차 혼합 단계 정백당 100 중량부당 천마 추출액에 젖산균을 접종하여 발효시킴으로써 수득된 천마 발효 추출액 30 내지 45 중량부, 오렌지 농축액 15 내지 25 중량부를 상기 탱크에 첨가하여 혼합한 후 멸균시키는 2차 혼합 단계 상기 탱크에 정백당 100 중량부당 함수구연산 1 내지 5 중량부, 비타민C 0.1 내지 2 중량부를 첨가하고 가열하는 가열 단계 및 가열된 내용물을 냉각시키는 냉각 단
