Weakening of the digestive system can be caused by chronic gastritis, peptic ulcer, gastroparesis or mental factors. 1. Chronic gastritis, such as irregular lifestyle, irregular diet, overeating, gastric mucous membrane damage or gastric atrophy, can cause symptoms of weakened digestive function. 2. Peptic ulcer is mainly the gastroduodenal mucosa ulcer surface, which affects the gastrointestinal tract to absorb food and nutrients is also easy to cause digestive function is weakened. 3. Gastroparesis is a significant decrease in gastric motility. For example, if the patient has undergone surgery related to the digestive system, it may trigger the weakening of digestive function. 4. Mental factors, such as prolonged sullenness, poor mood, high stress, etc., may also cause indigestion. There are many other causes of impaired digestive system function, it is recommended to go to the hospital to clarify the cause and treatment program, to avoid blindly using their own medication.