The invention discloses a medicated food additive capable of improving intestines and stomach digestion environment. When the medicated food additive is added into soup or porridge to eat, the state of human indigestion can be adjusted, and the digestion environment in human body can be improved. The medicated food additive is prepared by codonopsis pilosula, red dates, alpinia japonica, white hyacinth bean and powdered sugar. A preparation method comprises the following steps: (1) stir-frying the white hyacinth bean, smashing the white hyacinth bean to 120-200 meshes of fine powder for standby application after cooling; (2) adding 3-5 times of water to the codonopsis pilosula and the red dates for heating to extract, respectively extracting two times as each time is 1.5-2 hours, filtering and combining two filter liquor, and concentrating to the relative density of 1.35-1.38 during hot test at 85 DEG C to obtain thick paste for standby application; (3) mixing the thick paste, the white hyacinth bean powder and the powdered sugar, preparing particles according to a conventional method, and packaging after drying. When the medicated food additive is added into soup or porridge to eat, the role of adjusting intestines and stomach indigestion can be played, the digestion environment of human gastrointestinal tract can be improved, and the abdomen bilges unwell feeling can be eliminated. The medicated food additive is reasonable in formula, simple in process and easy to implement.