Under normal circumstances, the color of stool is golden yellow, yellow-brown, but the color of stool has a greater relationship with the individual’s dietary structure, food varieties, so there is no such thing as what color is best for stool. Golden-yellow, yellow-brown stools are mainly caused by bilirubin, but the color of stools varies with the individual’s dietary structure and food varieties. If you take too many green leafy vegetables, it may result in dark green stools; if you take blood products, it may result in black stools; and if you take iron supplements, it may also result in dark brown stools. If the change in stool color occurs without taking food or medication that affects the color of the stool, accompanied by abdominal pain, diarrhea, nausea, vomiting, you need to go to the hospital in time for examination, to clarify the cause of the disease under the guidance of a professional physician, and to actively treat it.