The invention discloses a composition, which comprises, in parts by mass: 10-35 parts of probiotic fermented fruit and vegetable puree, 0.5-5 parts of Chinese wolfberry, 0.5-5 parts of jujube, 0.5-5 parts of Smilax cocos, and 5 parts of lactitol ‑20 parts, 0‑10 parts of galactooligosaccharides, 0‑10 parts of stachyose, the composition can be used to prepare food, beverage or health care products, especially for the preparation of probiotic fermentation with laxative function Fruit and vegetable drinks. The invention also discloses a beverage comprising the above composition, water and sodium citrate and a preparation method thereof, by fermenting probiotics fruit and vegetable puree, Chinese wolfberry, jujube, Smilax tuckahoe, lactitol, galactooligosaccharides, water Threose and other substances are compounded to achieve the purpose of synergistic effect. While providing consumers with various nutrients of fermented fruits and vegetables, it can also achieve better gastrointestinal health care, especially the effect of laxative.