The present invention provides an Actinidia chinensis Planch. fermented extracts and the use thereof in a composition for increasing the antioxidant activity, increasing the anti-glycation activity, increasing the activity of proteolytic enzymes, improving the gastrointestinal dyspepsia, and increasing the gastrointestinal flora diversity. The Actinidia chinensis Planch. fermented extracts can increase the normal function of the gastrointestinal tract, maintain the normal function of the immune system, delay the progression of chronic diseases and aging, and increase the gastrointestinal digestive function to achieve the maintaining of the normal function of the intestinal tract. The Actinidia chinensis Planch. fermented extracts is prepared by fermenting the Actinidia chinensis Planch. extracts to yeast, lactic acid bacteria and acetic acid bacteria for three-stage fermentation.本發明提供一種奇異果發酵物及其用於增加抗氧化活性、增加抗糖化活性、增加蛋白質分解酶活性、改善腸胃道消化不良狀況、及增加腸胃道菌叢多樣性之組合物的用途，能有效使腸胃道之正常機能上升，以維持腸胃道免疫功能的正常運行，亦可有助於延緩慢性疾病與老化的進展，以及增加腸胃道消化之功能，並達到健胃整腸、維持腸道正常機能之功效。其中該奇異果發酵物，係將白奇異果水萃取物以酵母菌、乳酸桿菌及醋酸桿菌進行三段式發酵所製得。
