If you have diarrhea or unformed stools after eating out, it is considered that the meals outside are high in fat content, and the taste is heavy, spicy and stimulating, which can easily cause intestinal irritation and unformed stools after eating these foods. If the symptoms are more obvious and last for a long time, it is recommended to complete the electronic colonoscopy to exclude the possibility of intestinal tumors or inflammatory bowel disease and other lesions. If organic lesions are excluded, the diagnosis of irritable bowel syndrome is considered. The main treatments: 1. Avoid eating greasy or spicy food as much as possible. 2. Oral probiotics can be taken to relieve the symptoms, such as Meibaoan and Silienkang. In addition, you can eat yogurt in moderation to supplement probiotics to improve the symptoms.