The purpose of the present invention is to provide an oligosaccharide preparation, which sustains preferable physiological functions of oligosaccharides and has suppressed hygroscopicity and good storage stability, and a method for manufacturing the same. Provided is a method for producing an oligosaccharide preparation, said method comprising: (a) a step for dissolving oligosaccharides and acacia dietary fiber in a solvent to give a solution； and (b) a step for spray drying, vacuum drying or freeze drying the solution obtained by step (a)； optionally followed by (c) a step for granulation. Also provided is the oligosaccharide preparation manufactured by the aforesaid method.本發明之目的係提供在維持寡糖的較佳生理機能之基礎上，吸濕性受抑制且保存安定性良好的寡糖製劑以及其製造方法。根據本發明，係提供一種寡糖製劑之製造方法，其係包含下列步驟而成：(a)將寡糖及金合歡(acacia)食物纖維以溶媒進行溶解而獲得溶液之步驟、以及(b)將藉由前述步驟(a)所獲得之溶液進行噴霧乾燥、真空乾燥或凍結乾燥之步驟、及視情況(c)造粒步驟；以及藉由該製造方法所製造之寡糖製劑。
