There are many reasons for gray-green stool, which may occur because of gastrointestinal disorders, especially if you do not pay attention to diet, improper diet or cold can cause gastrointestinal disorders, you can take multi-enzyme tablets for treatment. Pay attention to the warmth of the abdomen during the illness, drink more warm water and do not eat stimulating food. Normal human stool appears yellow or yellowish-brown and slightly smelly, with soft, non-sticky strips. It may also be drug staining, iron deficiency anemia patients often need to take blood supplement drugs, but also need to take iron, drugs in combination with the food in the body, it is easy to produce oxidation and become green, but also do not need special treatment, after stopping the drug can be effective relief. There is also food staining, eating too many vegetables containing chlorophyll, will also lead to green stools, no special treatment, just improve the diet, do not eat too many vegetables at a time can be effective relief.