Pulling a grain of dry stool is considered to be a small amount of water, dietary fiber and other physiological factors caused by a lack of diet, but also may be hemorrhoids and other pathological factors caused by, there is no “what the body” of the argument. 1. physiological factors: dietary lack of dietary fiber, usually insufficient water intake, long-term sedentary without exercise and other reasons may cause a decline in water content in the feces, leading to pull a grain of dry stools of the situation. 2. Pathological factors: hemorrhoids can be accompanied by the symptoms of constipation, constipated patients due to the accumulation of feces in the intestine for a long time, resulting in feces in the water is absorbed by the intestine, caused by the situation of pulling a grain of dry stools. After excluding non-pathological factors, it is recommended to go to the hospital and ask the doctor to make a diagnosis.