Black spots in baby’s stool may be related to dietary factors, or may be caused by digestive diseases, blood-related diseases and other reasons. 1. Dietary factors: the digestive function of smaller babies is not yet very well developed, resulting in more food residue, there may be the phenomenon of black spots in the stool, usually not accompanied by other discomforts. 2. Digestive diseases: babies with acute gastritis, gastric ulcer and other diseases, can lead to children with bloody stools, if the bloody stools are mild, often show black spots in the stool, can also be accompanied by abdominal pain, diarrhea and other symptoms. 3. Blood diseases: thrombocytopenic purpura, neonatal sepsis, etc., can lead to black stools, resulting in black spots in the stool, which can be accompanied by poor mental health, weakness and other manifestations. Babies with black spots in the stool, if accompanied by other obvious symptoms of discomfort, should seek medical attention as soon as possible, after a clear diagnosis of the causative factors, by the doctor’s guidance for treatment.