People with a bad stomach can eat a moderate amount of lychee, but it is not recommended to eat more. Lychee is rich in vitamins, proteins, dietary fiber and other nutrients, moderate consumption can replenish the body’s energy, promote gastrointestinal peristalsis, promote digestion, thus conducive to the recovery of the disease. However, consuming a large amount of lychee at one time, because lychee is rich in sugar, will lead to excessive secretion of gastric acid, stimulating the gastric mucosa, may lead to indigestion, abdominal pain, abdominal distension, etc.. Patients suffering from peptic ulcer, gastric cancer and other diseases may be aggravated by consuming too much lychee. In addition, lychee has a high sugar content, long-term overconsumption also has the risk of increasing blood sugar. Patients are advised to follow their doctor’s advice and communicate with their doctors in case of abnormalities to avoid serious consequences.