Dry stool in the front and normal stool in the back may be related to dietary habits, constipation, irritable bowel syndrome and other factors. 1. Dietary habits: may be due to a period of time to eat too much meat, followed by a period of time to eat fruits and vegetables food, so the pre-stool due to slow intestinal peristalsis to absorb a large amount of water, the back of the intestinal tract in the role of dietary fiber to speed up the peristalsis, which produces the phenomenon of the front of the stool dry behind the normal phenomenon. 2. Constipation: For patients with mild constipation, because the feces in front stays in the intestines for a long time, the water will be absorbed and become dry, after the feces in front is discharged, the feces in the back is also discharged, and the feces that are newly formed in the intestines stays in the intestines for a shorter period of time, so the character of the feces is normal. 3. Irritable Bowel Syndrome (IBS): If there is mental anxiety and excessive stress, IBS can be triggered, which will affect the peristaltic function of the intestinal tract, resulting in constipation and diarrhea alternately, and can occur in front of the dry stools behind the normal situation. There are many other reasons that lead to dry stools in front of the back of the normal, if the symptoms are serious, or continue to see no improvement, it is recommended to go to the regular hospital in a timely manner, clear causes, under the guidance of the doctor for targeted treatment.