The invention discloses an oyster oligosaccharide drink, which is prepared by simultaneous fermentation of oyster polysaccharides and various auxiliary materials, using apples, pears, papaya, carrots, yams, wax gourds, peppers, Chinese cabbage, radishes, platycodon grandiflorum, ginseng, and jujube , blueberry, mountain grape, fungus, medlar and seabuckthorn are fermented by shochu koji, yeast, lactic acid bacteria and acetic acid bacteria to hydrolyze oyster polysaccharides into oyster oligosaccharides, no need for waste water treatment and expensive finished product glycosidase, low cost ; Oyster oligosaccharides work together with the above-mentioned fermented fruit, which has a good effect on lowering blood sugar and can effectively enhance the sexual function of adult males.