The green color of the stool is usually related to the consumption of food with chlorophyll, gastrointestinal diseases such as enteritis and intestinal flora disorders. 1. Eating food: when the patient eats more vegetables containing chlorophyll, these substances will make the stool green because the body cannot digest them. 2. Gastrointestinal diseases: If the patient suffers from enteritis, taking medication containing bismuth, etc., causing indigestion, diarrhea and other symptoms will appear in the stool with green. 3. Intestinal flora disorders: when the patient’s gastrointestinal tract Lactobacillus disorders, due to the acidic stool is oxidized after discharge, so it will become green. In short, the situation of green stool is more complicated, if accompanied by abdominal pain and diarrhea, etc., should consult a doctor in time to clarify the diagnosis.