Dry stool before and thin stool after is usually caused by intestinal dysfunction, intestinal tumors, etc. Patients can be treated through dietary care, medication and other ways. 1. Intestinal dysfunction: Intestinal dysfunction is usually caused by poor dietary habits, patients will have diarrhea and constipation alternately, which will lead to the symptoms of dry stools in the front and loose stools in the back. In diet, you can eat more easy to digest and rich in vitamins and proteins, such as dragon fruit, eggs and other foods, should avoid spicy and stimulating food. 2. Intestinal tumors: Intestinal tumors can reduce the function of gastrointestinal tract, alternating with diarrhea and constipation, resulting in dry stools and loose stools, and even blood in stools and intestinal obstruction, etc., which need to be consulted in time. Patients are advised to go to the hospital for examination and symptomatic treatment under the guidance of doctors.