When a normal person’s stool is yellow or yellow-green, when the stool appears greenish, first consider that it may be related to eating a lot of green vegetables, which increases the chlorophyll in the stool and stains the stool. When the intake of green vegetables is reduced, the color of stool can gradually change to yellow or yellow-green, without any obvious damage to the body. If there is no special discomfort, there is no need to give treatment. Another condition is indigestion, eating a lot of high-protein, greasy food, poor digestion and absorption ability of the body, and excessive accumulation of acidic food in the intestinal cavity. The bilirubin that is discharged into the intestinal cavity with bile is oxidized to bilirubin when it encounters air, making the stool dark green in color, and the stool also has a strong sour and putrid smell. In this case, we should pay attention to adjust the diet, eat more coarse grains, and light, easy to digest and absorb food, and if the symptoms are serious, we should give medication to adjust.