Diarrhea means diarrhea, eating fruit at night diarrhea has many reasons, common indigestion, enteritis, gastritis and so on. 1. indigestion: because the fruit is cold, eating fruit at night, cold food stimulation of the gastrointestinal mucosa, diarrhea can occur, accompanied by nausea, lower abdominal discomfort and other symptoms. 2. Enteritis: refers to various causes of intestinal inflammation, common symptoms of abdominal pain, diarrhea and so on. Patients with enteritis may also experience diarrhea when eating fruits at night. 3. Gastritis: refers to acute and chronic inflammation of the gastric mucosa caused by different reasons, mainly manifested as abdominal pain, abdominal distension, nausea, vomiting, etc. Gastritis patients eating fruits at night can also have diarrhea symptoms. Eating fruit at night diarrhea may also be related to other causes, such as gastrointestinal dysfunction. It is recommended to consult a doctor as soon as possible to clarify the cause of diarrhea and treat it as soon as possible under the guidance of a professional physician.