Diarrhea, commonly known as diarrhea, refers to an abnormal increase in stool moisture and the number of stools, usually more than 3 times a day, and the nature of the stool is more important than the number of times. Diarrhea is not a serious disease in the eyes of most people, but its damage to the body should not be underestimated, the so-called good man can not stand three bubble thin. Severe diarrhea can cause dehydration and electrolyte disturbances in the body, and it is not alarming to hear that it is life-threatening, especially in weak women, the elderly and infants. Several common clinical misconceptions or wrong practices are: 1, diarrhea on the use of haloperidol: on the one hand, non-infectious diarrhea does not require anti-infective treatment, the abuse of antibiotics not only can not cure diarrhea, but also kill a large number of good bacteria beneficial to the body in the intestine, on the other hand, such drugs minors are not applied. 2, the casual application of antidiarrheal drugs: some people according to the advertising, a diarrhea with a strong antidiarrheal drugs, in fact, infection or toxic diarrhea, diarrhea itself can be toxins out of the body, in a sense, is the body’s own a protective behavior, strong antidiarrheal will instead be detrimental to the pathogenic microorganisms and toxins out of the body, diarrhea serious can choose some drugs with moderate astringent effect and adsorption, such as montelukast etc. 3, diarrhea when fasting and water: some people with diarrhea, in order to reduce the gastrointestinal burden, or reduce the amount of diarrhea, choose not to eat, do not drink water, think hungry two meals will be good, in fact, fasting and water so that the already weak body does not get nutrition and water supplement, there are not enough nutrients to repair the damaged intestine, but will aggravate the disease. For weak diarrhea patients, the most important thing is to prevent dehydration and treat dehydration and prevent electrolyte disorders. Infants and young children have poor regulation of water and salt balance, and when they have diarrhea, not only is their ability to absorb water and inorganic salts impaired, but water and salt also enter the intestine from the bloodstream, causing the body to lose water and salt, resulting in dehydration. Therefore, the most important aspect in the treatment of diarrhea in babies is to prevent dehydration as much as possible, and if dehydration has already occurred, it must be treated as soon as possible. An important measure to prevent and treat dehydration is rehydration. When it comes to rehydration, the first thing that comes to mind is to go to the hospital for an infusion or an IV. Of course, infusion is a very effective means of rehydration treatment, but in fact not all diarrhea patients need to go to the hospital for an IV. So how to properly rehydrate? Is it just a matter of holding pure water and drinking it hard, but of course not. Because while rehydrating, we should also pay attention to prevent water-electrolyte disorders or secondary hypotonic dehydration. Oral rehydration fluid should contain the appropriate ratio of glucose and inorganic salts, rehydration effect is better than pure water, and can replace the salt lost in diarrhea. However, it is important to remember that when rehydrating children, do not add sugar, honey or other things to the solution casually because of poor taste or other reasons to avoid changing the osmotic pressure of the liquid and the salt to sugar ratio. The elderly with combined hypertension and heart disease should pay attention to the speed of rehydration. Of course, for serious patients whose condition is not controlled or continues to worsen after their own treatment, they still need to go to the hospital to receive infusion treatment and further examination.