Six-month-old babies with green poop, most of the normal physiological; if combined with vomiting and other symptoms, may be due to gastroenteritis, need treatment. 1. Physiological factors (1) Breastfeeding: breastfeeding children can be presented as yellow, golden yellow or green stools, stools are mostly golden yellow soft stools or with a little yellow stool particles, usually not smelly, without fever and other symptoms. (2) Mixed feeding: on the basis of breastfeeding, when adding all kinds of vegetables, fruits and other complementary foods, the appearance of stools is similar to that of adult feces, and a small amount of green feces is often discharged when vegetable puree is added at the beginning, which is normal. 2. Pathological factors (1) dyspepsia: due to abdominal cold and other reasons, six-month-old babies will be secondary dyspepsia, caused by green stools, accompanied by diarrhea and other symptoms. (2) Acute gastroenteritis: in addition to green stools, usually with vomiting, diarrhea, crying and other manifestations, in addition to mucus may also appear in the stool. Six-month baby green stool, there may be other reasons, it is recommended to go to the hospital, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.