Drugs for the treatment of gastrointestinal diseases mainly include acid-suppressing drugs, gastric mucous membrane protection drugs, intestinal probiotic preparations, gastrointestinal stimulants, digestive enzyme preparations, antidiarrheal drugs, antibiotics and so on. 1. Acid-suppressing drugs: mainly including proton pump inhibitors (such as omeprazole, lansoprazole, rabeprazole, etc.) and H2-receptor antagonists (such as ranitidine, famotidine, etc.), which can inhibit the secretion of gastric acid, and are suitable for those with excessive secretion of gastric acid, such as peptic ulcer, Zuo Ai syndrome and so on. 2. Gastric mucosa protection drugs: such as bismuth potassium citrate, bismuth pectin, magnesium aluminum carbonate, etc., which can protect the gastric mucosa, and are suitable for patients with damaged mucosa, such as chronic gastritis and gastric ulcer. 3. Intestinal probiotic preparations: suitable for patients with bloating, constipation and diarrhea caused by intestinal flora imbalance, including bifidobacteria, lactobacillus and other drugs. 4. pro-dynamic drugs: such as domperidone, mosapride, etc., can be used to regulate gastrointestinal dynamics, suitable for patients with gastrointestinal peristalsis disorders, such as gastroesophageal reflux disease, gastrointestinal dysfunction, and so on. 5. Digestive enzyme preparations: such as compound digestive enzymes, etc., can promote digestion, applicable to patients with dyspepsia. 6. Antidiarrheal drugs: such as montelukast, applicable to patients with diarrhea due to various reasons. 7. Antibiotics: such as amoxicillin, clarithromycin, metronidazole, tinidazole, quinolones, cephalosporins, etc., which can be used for anti-infective treatment, and are suitable for patients with acute gastroenteritis or Helicobacter pylori eradication treatment. Patients with suspected gastrointestinal diseases are advised to seek timely medical attention to identify the cause of the disease. The above drugs need to be taken in strict accordance with the doctor’s instructions, not self-medication, so as not to delay the condition.