If the stool appears green, there are generally several possibilities: first, the color of the food. Second, the color of the medicine. Thirdly, it is caused by cold in the stomach and intestines. If it is caused by cold in the stomach and intestines, it will cause weakness of the spleen and stomach and indigestion in the long run. Generally green stools often show a watery or pasty, sour odor and foam, mostly in indigestion, gastrointestinal tract dysfunction and other diseases. If there is pus in the green color, it is a sign of acute enteritis or bacillary dysentery. After major abdominal surgery or extensive antimicrobial therapy, the sudden appearance of green watery stools with a fishy odor and grayish-white flakes of translucent egg-white-like microscopic particles suggests possible Staphylococcus aureus enteritis. In addition eating a large amount of food containing chlorophyll or high intestinal pH can turn the stool green. Generally it is necessary to pay attention to the medication of the severe link, specifically, you can choose sensitive antimicrobial drugs according to the stool routine.