You can drink yogurt in moderation if you have a bad stomach, but if you have a serious organic disease, you should drink a small amount. Yogurt is rich in probiotics and protein, which is beneficial to patients with gastrointestinal dysfunction or dysbiosis, but patients with poor digestive function are advised to drink warm milk and not to drink milk on an empty stomach. In addition, for those who have acute gastritis, acute gastric hemorrhage, etc., it is not recommended to drink yogurt, because yogurt may stimulate the gastric mucosa, promote the secretion of gastric acid and aggravate gastritis. People with upset stomach should pay attention to a light diet, avoid too cold and spicy diet, and maintain good work and rest habits. It is recommended that patients with upset stomach have regular medical checkups and gastroscopy if possible to rule out tumors or serious ulcers. If the condition is not serious, you can drink a small amount of warm sour milk.