Patients with diarrhea and dehydration generally show symptoms such as dry lips and tongue, reduced urine volume, dry skin, poor elasticity or gloss, and in severe cases, collapsed eye sockets and mental depression. If the number of diarrhea is high and the above symptoms appear, you should be alert to the possibility of diarrhea and dehydration. It is recommended to go to the hospital immediately, and under the guidance of the doctor, take oral rehydration salts to replenish electrolytes according to the degree of dehydration, and closely observe the patient’s condition at the same time. If the symptoms of dehydration continue to worsen after oral rehydration, intravenous rehydration therapy is also required under the guidance of a doctor to prevent severe dehydration leading to water-electrolyte imbalance and shock, and even life-threatening. In addition to the above treatment, patients should also pay attention to their diet during the treatment period, drinking as much as possible such as thin rice, rice soup, millet porridge and noodles in clear soup to replenish water, and taking oral potassium chloride under medical supervision to replenish the lost potassium in the body.