Patients who can’t stop straining are most likely to have infectious diarrhea, the most common cause of which is bacterial infection. The most common cause is bacterial infection. Stool routine plus blood tests are needed to clarify this. After the diagnosis is confirmed, anti-infective treatment with antibiotics such as levofloxacin lactate and cephalosporin is needed. If the diarrhea is obvious, montelukast is needed to stop the diarrhea. When the diarrhea is heavy, it may cause excessive water loss in the body, which may lead to sodium and potassium plasma disorders. Blood tests are needed to clarify this, and after the diagnosis is confirmed, fluid infusion is needed to replenish water and electrolytes in the hospital. Functional diarrhea may also cause heavy diarrhea that cannot be stopped. In this case, the diarrhea can be stopped with Emmenthal and treated with oral rehydration or infusion.