Old diarrhea stomach pain, may be due to dietary impurity, acute and chronic gastroenteritis and other reasons, can be through physical therapy, montelukast, levofloxacin and other medications, dietary therapy, and so on. 1. Frequent abdominal pain, diarrhea of the crowd, the symptoms are mild, through hot compresses, massage abdomen and other physical therapy to alleviate the symptoms, bowel movements increased attention to replenish fluids, so as not to cause dehydration or electrolyte disorders in the body. 2. When the symptoms are serious, it is recommended to take oral medications such as gastrointestinal mucosal protectants such as montelukast, patients with diagnosed acute gastroenteritis, you can also orally intestinal probiotics such as bifidobacteria to improve the intestinal flora imbalance, bacterial infections caused by the quinolone antibiotics such as levofloxacin. 3. Pay attention to daily dietary hygiene, eat more light, easy to digest food, avoid eating spicy, stimulating food. During the treatment period, it is recommended to eat semi-liquid food such as millet porridge, avoid drinking milk, soy milk and other foods containing a lot of protein, which are difficult to digest and produce a lot of gas. People who always have diarrhea are advised to go to the hospital in time to avoid serious consequences.