The invention discloses a traditional-Chinese-medicine preparation for enhancing the intestinal motility. The traditional-Chinese-medicine preparation is combined by raw rhizoma atractylodis macrocephalae and immature bitter orange at a mass ratio of (60-80):(25-35). The invention further provides a traditional-Chinese-medicine water decoction agent. The traditional-Chinese-medicine water decoction agent is obtained by using 70g of raw rhizoma atractylodis macrocephalae and 30g of immature bitter orange to decoct into 100ml of water agent. The traditional-Chinese-medicine preparation disclosed by the invention has the innovative points that large-dosage raw rhizoma atractylodis macrocephalae and immature bitter orange are used for preparing the traditional-Chinese-medicine preparation by selecting proper matching ratio; the prepared preparation has the advantages that the intestinal motility can be effectively enhanced, the treating effect for slow-transit constipation is equivalent to that of the western-medicine preparation, simultaneously the defects of large side effect and expensive price of the western-medicine preparation are avoided and the western-medicine preparation can be better replaced.