The symptoms of diarrhea are mainly related to improper diet, functional diseases of the digestive system such as irritable bowel syndrome, imbalance of intestinal flora, and organic lesions of the digestive system such as gastrointestinal ulcers and enteritis. 1. Improper diet: consuming a lot of spicy and stimulating, cold and greasy food will stimulate the gastrointestinal mucosa, leading to abnormal gastrointestinal peristalsis, which will lead to abdominal pain, diarrhea, and high intestinal sound symptoms. 2. Functional diseases of the digestive system: such as functional dyspepsia, irritable bowel syndrome, etc., can trigger dyspepsia, gastrointestinal dysfunction. In the acute attack period, some patients may have diarrhea, abdominal distension and high intestinal sounds. 3. Imbalance of intestinal flora: it can lead to abdominal distension, abdominal pain, diarrhea and other symptoms, and some patients may have high intestinal tones and other symptoms when they have diarrhea. 4. Organic lesions of the digestive system: such as gastrointestinal ulcers, enteritis and other diseases, during the attack, the same may appear such symptoms. The symptoms may also be related to other causes. It is recommended that the patient seek medical attention as soon as possible for targeted treatment.