It is important to drink warm boiled water or sweetened saline because the first thing that is lost in diarrhea is a large amount of water, and the loss of water can easily lead to a decrease in the effective circulating blood volume, which can cause hypotension. Diarrhea also tends to lead to the loss of a large amount of sodium and potassium ions as well as a small amount of calcium ions, so replenishing effective sodium and potassium ions is very helpful to maintain the body’s effective circulating blood volume and prevent electrolyte disorders. For diarrhea diarrhea, you need to replenish sugar and salt and hydrate. If the diarrhea is more frequent, accompanied by nausea, vomiting and fever, it is also necessary to give oral appropriate medication, such as oral rehydration salts or intravenous infusion of liquid potassium, calcium and sodium ions for maintenance. In some cases, diarrhea is more frequent and requires aggressive anti-inflammatory therapy, rehydration therapy, and medication to improve gastrointestinal motility.