Different treatment methods are available for different causes of intestinal diarrhoea, as follows: 1. For long-term improper diet or short-term overeating, use Baohe Wan to eliminate food, guide stagnation and harmonize the stomach; 2. For deficiency of the spleen and stomach, use Penzi Rizhong Wan to warm the middle and strengthen the spleen; 3. If there is a deficiency of the spleen and kidney, use Si Shen Wan to warm the kidneys and disperse cold, and astringently stop diarrhoea. For specific medication, please refer to the doctor’s instructions.