The common reasons for the deterioration of gastrointestinal function in the elderly include reduced secretion of digestive enzymes, decreased peristaltic ability of the gastrointestinal tract, and digestive diseases, etc. Commonly used countermeasures are to eat easy-to-digest foods, promote gastrointestinal peristalsis, and treat digestive diseases. 1. Decreased secretion of digestive enzymes: Decreased secretion of digestive enzymes can lead to decreased digestion of food by the stomach and intestines of the elderly. At this time, we should let the elderly eat easy-to-digest food, such as soft noodles, rice paste, millet porridge and so on. But also pay attention to give the elderly supplemental nutrition, such as moderate amount of minced meat, vegetables and eggs. 2. Gastrointestinal peristalsis decline: the elderly because the gastrointestinal tract muscle fiber atrophy, so the peristaltic function declined, can not empty the food in time. In daily life, the elderly can eat probiotics that can stimulate gastrointestinal peristalsis. If there is indigestion, you can also take drugs such as mosapride citrate tablets and domperidone to promote gastrointestinal peristalsis. 3. Suffering from digestive tract diseases: Elderly people suffering from digestive tract diseases, such as chronic gastritis, gastric ulcer and enteritis, etc., their gastrointestinal function will also deteriorate. In this case, we should actively treat digestive diseases, such as taking acid-suppressing drug omeprazole, and also can take gastric mucous membrane protector such as gastric potassium citrate granules. The deterioration of gastrointestinal function of the elderly is generally a normal physiological phenomenon, family members do not need to worry too much, and pay attention to daily diet can be. However, if the deterioration of gastrointestinal function of the elderly is accompanied by other abnormalities, it is necessary to send to the doctor for treatment in a timely manner, and follow the doctor’s instructions to use medication.