The invention discloses a traditional Chinese medicine composition for improving gastrointestinal function and a preparation method of the traditional Chinese medicine composition, belonging to the field of traditional Chinese medicine. Traditional Chinese medicines of Colysis wrightii, nanmu skin, Aralia chinensis leaf, jasminum lanceolarium and long-stalked kadsura serving as raw materials are combined to prepare active ingredients, and oral liquid is prepared by the active ingredients and normal medicinal pharmaceutical adjuvants. The traditional Chinese medicine composition is capable of improving gastrointestinal function and effective in treating gastrointestinal dysfunction.