Children’s green poop can be caused by normal physiological factors such as food intake, or it can be related to colds and enteritis. 1. Physiological factors: children eat iron fortified formula, green vegetables, chicken blood and other foods, these foods contain high iron or chlorophyll, iron can be discharged with the stool, through the air oxidation into green, these are normal physiological phenomena, without special care. 2. Colds: children with colds will lead to intestinal peristalsis too fast, bilirubin can not be reduced to bilirubin in a timely manner, resulting in green stools, often accompanied by runny cough and other symptoms. 3. enteritis: children’s digestive system is not yet well developed, by the outside world germs infection, intestinal flora imbalance, intestinal peristalsis accelerated, the appearance of thin stools, the number of times, the color of the stool can be green, accompanied by decreased appetite, fever and other symptoms. There are many reasons for children to have green stools, and it is recommended to go to the hospital to find out the cause of the problem and give corresponding treatment under the guidance of the doctor if the problem persists without any relief.