Stool is not shaped, black, in fact, there are many reasons: 1, may be caused by chronic enteritis, chronic enteritis is also a kind of multiple diseases, with recurrent characteristics, will appear diarrhea, abdominal pain, stool and many other symptoms, most of which are directly related to the body’s weakness, low resistance. 2, in addition to this, may be due to the imbalance of the spleen and stomach or indigestion, this time, stool is not shaped, will also appear obviously black phenomenon. The phenomenon of darkness will also be obvious. You can consider dietary modifications.