If your little one’s poop is green, yellow with one grain, and black with one grain, it may be related to the food itself with color, indigestion and so on. 1. The food itself has color: when the baby eats red dragon fruit, it may make the stool appear purplish red, black; eat a lot of carrots, pumpkin, etc., it may make the stool dryer, yellow granules, and even the skin appears to be yellow; or eat cucumber, spinach, etc., it may make the stool appear green, and it may get better after stopping the above food. 2. Indigestion: the baby’s digestive function is not fully developed, such as breastfeeding, the mother ate high-fat, high-protein food; formula feeding, the proportion of milk powder is more; bigger babies like to eat meat, do not like to eat vegetables, etc., may cause indigestion, so that the stool appears green, yellow, black granular. Little baby’s poop is green, yellow granules, and black granules, there may be other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.