Drinking salt water for diarrhea is useful, diarrhea is mainly anti-infective such as levofloxacin, antidiarrheal treatment such as montelukast, intestinal flora regulation, dietary modification. Diarrhea can easily lead to the loss of water and electrolytes in the body, drinking salt water can avoid dehydration, maintain acid-base balance and avoid electrolyte disorders. Diarrhea is mainly treated with anti-infective therapy, and antibiotics such as levofloxacin can be used. Note that levofloxacin is contraindicated under 18 years of age. To stop diarrhea, use loperamide, montelukast and so on, and also can take oral probiotics to regulate the intestinal flora. During the period of diarrhea, keep your diet light and avoid spicy, stimulating and cold foods. If diarrhea occurs, please go to the hospital in a timely manner, follow the doctor’s instructions for treatment, do not delay the condition and unauthorized treatment.