Black and green stools in babies may be caused by non-pathological reasons such as diet, medication, fetal stools and abdominal cold, or pathological reasons such as upper gastrointestinal bleeding and enteritis. If your baby has black and green stools for a long time and not relieved, it is recommended to seek medical attention in time to avoid delaying the condition. A, non-pathological causes: 1, diet: baby poop a little black green, may be due to the recent period of frequent intake of spinach, cabbage and other green vegetables caused by vegetables contain a lot of dietary fiber, chlorophyll and vitamins, after eating due to incomplete digestion, resulting in the baby poop a little black green. Generally do not need to worry too much, to be completely digested food, the symptoms can be relieved; 2, drugs: if the baby recently took a period of time pediatric ferrous sulfate syrup, compound ferric ammonium citrate syrup and other iron supplement drugs, iron ions and intestinal hydrogen sulfide chemical reaction, resulting in the baby poop a little black green. If the baby organism does not appear other uncomfortable symptoms, generally do not need special treatment; 3, fetal stool: If the newborn, poop a little black green is usually fetal stool. Baby in the fetal period swallowing amniotic fluid, bile and intestinal secretions caused by the normal phenomenon, generally do not need special treatment, with milk powder and breastfeeding, stool color can gradually transition to yellow; 4, abdominal cold: If you do not do a good job of abdominal warmth, but the abdomen is cold, can cause gastrointestinal disorders, may also appear digestive capacity decreased, resulting in the baby poop a little black green. It is recommended to do a good job of keeping the baby’s abdomen warm on a daily basis, add clothing in a timely manner, and can be treated with drugs such as Bacillus subtilis dibacterium pellets and montelukast under the guidance of a doctor. Second, pathological causes: 1, upper gastrointestinal bleeding: generally refers to the esophagus, stomach, duodenum, pancreatic duct and bile duct bleeding, baby upper gastrointestinal bleeding caused by black green stool is due to iron containing hemoglobin, by the role of intestinal sulfide formation of iron sulfide. Usually, if the bleeding is small, the bleeding can be treated with growth hormone release inhibiting hormone, proton pump inhibitors and other drugs as prescribed by the doctor. In serious cases, electrocoagulation is also required under the gastroscope to stop bleeding; 2, enteritis: if the baby eats unclean food, resulting in rotavirus, dysentery bacillus, Candida albicans infection, thus causing enteritis. After the disease is likely to lead to intestinal mucosa bleeding, edema, intestinal dysfunction, thus causing the baby to poop a little dark green or black green. Usually, oral rehydration salts can be administered as prescribed by the doctor to replenish body water and electrolytes.