Green stools are generally referred to as green stools, which may be caused by dietary factors, drug effects or enteritis. 1. Dietary factors: when patients eat a lot of green pigment-carrying food for a long time, the pigment cannot be digested and absorbed by the stomach and intestines, which will lead to the pigment entering into the feces and causing green stools. This is a normal physiological phenomenon, generally do not need to be overly concerned. 2. Drug effects: when taking drugs such as ferrous sulfate, some of the drugs can not be absorbed by the intestines, which will cause residual, residual iron may also have an impact on the color of stools, green stools. 3. Enteritis: When there is unclean diet or bacterial infection, it will stimulate the intestinal tract and cause enteritis. After suffering from this disease, the intestines can not properly digest and absorb food, which may also lead to green stools, and may also be accompanied by a pronounced odor. There is often mucus in the stool, accompanied by changes in bowel habits and an increase in the frequency of bowel movements. If the patient does not have abdominal pain, diarrhea and other discomforts, and only shows green stools, it can be temporarily observed, except for food and other physiological factors. Green stools may also be caused by other reasons, if there are other clear discomfort, it is recommended that patients go to the hospital in a timely manner, choose the appropriate method of treatment.