The occurrence of green stools is related to diet, and may also be caused by gastroenteritis or indigestion. 1. Diet: If you have recently consumed a large amount of green vegetables, and digestion is incomplete, it may cause staining of the stools, manifesting as green stools, which is a physiological change and does not require special intervention. 2. Gastroenteritis: If you suffer from gastroenteritis, it may also be manifested as green stools, due to the imbalance of the intestinal flora system, the harmful bacteria will cause chemical reactions to the food residues, resulting in the occurrence of the above phenomenon. 3. Indigestion: the intestinal system can not absorb the nutrients of food, and at the same time, the food residues will be discharged quickly, the feces in the digestive tract for a shorter period of time, due to the bilirubin in the feces is acidic, easily oxidized to bilirubin, so the color is predominantly green, which may be manifested as a situation of green stools. If you have green stools, it is recommended that you keep a close eye on your diet and seek medical attention for any abnormalities, and follow the doctor’s instructions for symptomatic intervention.